Publications

2025

• Choudhury V., Jaksch K., Lippl M., Frosz MH., Elser W., Leuchs G., Marquardt C., Joly N.:
  Quantum-Limited Polarization Measurements in Twisted Photonic Crystal Fibers
  CLEO: Fundamental Science 2025 (Long Beach, 4. May 2025 - 9. May 2025)
  In: CLEO: Fundamental Science 2025 2025
  DOI: 10.1364/CLEO_FS.2025.FF120_2
• Eul S., Hiemstra T., Vermeer J., Struck J., Marquardt C.:
  Universal Encoder for Phase-, Time-Bin- and Polarization-Based QKD Schemes
  2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (München, 23. June 2025 - 27. June 2025)
  In: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) 2025
  DOI: 10.1109/CLEO/Europe-EQEC65582.2025.11110196
• Huang SH., Dirmeier T., Shafiee G., Laiho K., Strekalov DV., Aiello A., Leuchs G., Marquardt C.:
  Indistinguishable Heralded Photon Pairs from a Whispering Gallery Resonator
  2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (, 23. June 2025 - 27. June 2025)
  In: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) 2025
  DOI: 10.1109/CLEO/Europe-EQEC65582.2025.11110509
• Huang SH., Dirmeier T., Shafiee G., Laiho K., Strekalov DV., Aiello A., Leuchs G., Marquardt C.:
  Indistinguishable MHz-narrow heralded photon pairs from a whispering gallery resonator
  In: APL Photonics 10 (2025), Article No.: 056111
  ISSN: 2378-0967
  DOI: 10.1063/5.0263312
• Mohageg M., Anastopoulos C., Brasher O., Gallicchio J., Hu BL., Jennewein T., Johnson S., Lin SY., Ling A., Lohrmann A., Marquardt C., Mazzarella L., Meister M., Newell R., Roura A., Vallone G., Villoresi P., Wörner L., Kwiat P.:
  Towards satellite tests combining general relativity and quantum mechanics through quantum optical interferometry: progress on the deep space quantum link
  In: EPJ Quantum Technology 12 (2025), Article No.: 78
  ISSN: 2196-0763
  DOI: 10.1140/epjqt/s40507-025-00370-1
• Pudelko J., Bayraktar Ö., Vermeer J., Vill L., Khan I., Boxleitner W., Petscharnig S., Pacher C., Leuchs G., Marquardt C.:
  Quantum Communication with Photonic Integrated Circuits on a CubeSat
  2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025 (Munich, DEU, 23. June 2025 - 27. June 2025)
  In: 2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025 2025
  DOI: 10.1109/CLEO/EUROPE-EQEC65582.2025.11110274
• Richter S., Eisemann L., Vural H., Bayraktar Ö., Jaksch K., Khan I., Eichhammer E., Sollner E., Marquardt C.:
  Experimental Deployment of a 4-State Continuous-Variable QKD System with Rate-Adaptive Error Correction in an Urban Environment
  2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (, 23. June 2025 - 27. June 2025)
  In: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), New York City: 2025
  DOI: 10.1109/CLEO/Europe-EQEC65582.2025.11110834
• Vermeer J., Pudelko J., Bayraktar Ö., Günthner K., Marquardt C.:
  Photonic Integrated Phase Encoding Transmitter for Satellite QKD
  2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (München, 23. June 2025 - 27. June 2025)
  In: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) 2025
  DOI: 10.1109/CLEO/Europe-EQEC65582.2025.11109539

2024

• Huang SH., Dirmeier T., Shafiee G., Laiho K., Strekalov DV., Leuchs G., Marquardt C.:
  Polarization-entangled photons from a whispering gallery resonator
  In: npj Quantum Information 10 (2024), Article No.: 85
  ISSN: 2056-6387
  DOI: 10.1038/s41534-024-00876-z
• Huang SH., Dirmeier T., Shafiee G., Laiho K., Strekalov DV., Leuchs G., Marquardt C.:
  Polarization entanglement from a crystalline whispering gallery resonator
  CLEO: Fundamental Science 2024 (Charlotte, 5. May 2024 - 10. May 2024)
  In: CLEO 2024 2024
  DOI: 10.1364/CLEO_FS.2024.FTh3R.5
• Marquardt C.:
  Recent Developments in Quantum Key Distribution
  Optical Fiber Communication Conference 2024 (San Diego, 24. March 2024 - 28. March 2024)
  In: Optical Fiber Communication Conference (OFC) 2024 2024
  DOI: 10.1364/OFC.2024.M4H.5
• Popp A., Sedlmeir F., Stiller B., Marquardt C.:
  Eavesdropper localization for quantum and classical channels via nonlinear scattering
  In: Optica Quantum 2 (2024), p. 21
  ISSN: 2837-6714
  DOI: 10.1364/OPTICAQ.502944

2023

• Geilen A., Popp A., Das D., Junaid S., Poulton CG., Chemnitz M., Marquardt C., Schmidt MA., Stiller B.:
  Extreme thermodynamics in nanolitre volumes through stimulated Brillouin–Mandelstam scattering
  In: Nature Physics (2023)
  ISSN: 1745-2473
  DOI: 10.1038/s41567-023-02205-1
• Hacker B., Günthner K., Rößler C., Marquardt C.:
  Phase-locking an interferometer with single-photon detections
  In: New Journal of Physics 25 (2023), p. 113007
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/ad0752
• Laiho K., Dirmeier T., Shafiee G., Marquardt C.:
  Unfolding the Hong-Ou-Mandel interference between heralded photons from narrowband twin beams
  In: New Journal of Physics (2023)
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/ace791
• Popp A., Stiller B., Marquardt C.:
  Localizing Eavesdroppers Inside a Quantum Channel Using Stimulated Brillouin Scattering
  2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (München, 26. June 2023 - 30. June 2023)
  DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232821
• Pudelko J., Bayraktar Ö., Khan I., Boxleitner W., Petscharnig S., Pacher C., Leuchs G., Marquardt C.:
  Integrated Photonics for Quantum Communication on a Cubesat
  2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (München, 26. June 2023 - 30. June 2023)
  In: 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) 2023
  DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10231897

2022

• Belenchia A., Carlesso M., Bayraktar Ö., Dequal D., Derkach I., Gasbarri G., Herr W., Li YL., Rademacher M., Sidhu J., Oi DK., Seidel ST., Kaltenbaek R., Marquardt C., Ulbricht H., Usenko VC., Wörner L., Xuereb A., Paternostro M., Bassi A.:
  Quantum physics in space
  In: Physics Reports-Review Section of Physics Letters 951 (2022), p. 1-70
  ISSN: 0370-1573
  DOI: 10.1016/j.physrep.2021.11.004
• Geilen A., Popp A., Das D., Junaid S., Poulton C., Chemnitz M., Marquardt C., Schmidt MA., Stiller B.:
  Thermodynamic Control of Nanoliter Volumes of CS2 via Stimulated Brillouin Scattering
  Frontiers in Optics, FiO 2022 (Rochester, NY, 17. October 2022 - 20. October 2022)
  In: Optics InfoBase Conference Papers 2022
  DOI: 10.1364/FIO.2022.JTu4A.59
  URL: https://opg.optica.org/abstract.cfm?uri=FiO-2022-JTu4A.59
• Hutterer M., Auer M., Baliuka A., Bayraktar Ö., Freiwang P., Gall M., Günthner K., Haber R., Janusch J., Knips L., Kobel P., Krauss M., Lemke NM., Marquardt C., Moll F., Papadopoulos C., Pudelko J., Rödiger B., Roubal C., Scharnagl J., Schilling K., Schmidt C., Weinfurter H.:
  QUBE-II - Quantum Key Distribution with a CubeSat
  73rd International Astronautical Congress, IAC 2022 (Paris, 18. September 2022 - 22. September 2022)
  In: IAC-22-B4.9-GTS.5.5,x70823 2022
  URL: https://elib.dlr.de/190981/1/IAC-22-B4.9-GTS.5.5x70823.pdf
• Knips L., Auer M., Baliuka A., Bayraktar Ö., Freiwang P., Grünefeld M., Haber R., Lemke N., Marquardt C., Moll F., Pudelko J., Rödiger B., Schilling K., Schmidt C., Weinfurter H.:
  QUBE – Towards Quantum Key Distribution with Small Satellites
  Quantum 2.0, QUANTUM 2022 (Boston, MA, USA, 13. June 2022 - 16. June 2022)
  In: Optics InfoBase Conference Papers 2022
  URL: https://opg.optica.org/abstract.cfm?uri=quantum-2022-QTh3A.6
• Laiho K., Dirmeier T., Schmidt M., Reitzenstein S., Marquardt C.:
  Measuring higher-order photon correlations of faint quantum light: A short review
  In: Physics Letters A 435 (2022)
  ISSN: 0375-9601
  DOI: 10.1016/j.physleta.2022.128059
• Mohageg M., Mazzarella L., Anastopoulos C., Gallicchio J., Hu BL., Jennewein T., Johnson S., Lin SY., Ling A., Marquardt C., Meister M., Newell R., Roura A., Schleich WP., Schubert C., Strekalov DV., Vallone G., Villoresi P., Woerner L., Yu N., Zhai A., Kwiat P.:
  The deep space quantum link: prospective fundamental physics experiments using long-baseline quantum optics
  In: EPJ Quantum Technology 9 (2022), Article No.: 25
  ISSN: 2196-0763
  DOI: 10.1140/epjqt/s40507-022-00143-0
• Rößler C., Günthner K., Hacker B., Leuchs G., Marquardt C., Leuchs G.:
  A High-Rate Receiver for Satellite Quantum Key Distribution
  Quantum 2.0, QUANTUM 2022 (Boston, MA, USA, 13. June 2022 - 16. June 2022)
  In: Optics InfoBase Conference Papers 2022
  URL: https://opg.optica.org/abstract.cfm?uri=quantum-2022-QTh3A.2

2021

• Berg-Johansen S., Neugebauer M., Aiello A., Leuchs G., Banzer P., Marquardt C.:
  Microsphere kinematics from the polarization of tightly focused nonseparable light
  In: Optics Express 29 (2021), p. 12429-12439
  ISSN: 1094-4087
  DOI: 10.1364/OE.419540
• Geilen A., Popp A., Walter D., Chemnitz M., Junaid S., Poulton CG., Marquardt C., Schmidt MA., Stiller B.:
  Strong optoacoustic interaction in hot CS2-filled liquid-core optical fiber
  2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 (Munich, 21. June 2021 - 25. June 2021)
  In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 2021
  DOI: 10.1109/CLEO/Europe-EQEC52157.2021.9541969
  URL: https://opg.optica.org/abstract.cfm?URI=CLEO_Europe-2021-cd_9_6
• Kaltenbaek R., Acin A., Bacsardi L., Bianco P., Bouyer P., Diamanti E., Marquardt C., Omar Y., Pruneri V., Rasel EM., Sang B., Seidel ST., Ulbricht H., Ursin R., Villoresi P., van den Bossche M., von Klitzing W., Hugo Z., Paternostro M., Bassi A.:
  Quantum technologies in space
  In: Experimental Astronomy 51 (2021), p. 1677-1694
  ISSN: 0922-6435
  DOI: 10.1007/s10686-021-09731-x
  URL: https://link.springer.com/article/10.1007/s10686-021-09731-x
• Mazzarella L., Mohageg M., Strekalov DV., Zhai A., Israelsson U., Matsko A., Yu N., Anastopoulos C., Carpenter B., Gallicchio J., Hu BL., Jennewein T., Kwiat P., Lin SY., Ling A., Marquardt C., Meister M., Moffat B., Newell R., Roura A., Schubert C., Vallone G., Villoresi P., Wörner L.:
  Goals and feasibility of the Deep Space Quantum Link
  Quantum Communications and Quantum Imaging XIX 2021 (San Diego, CA, USA, 1. August 2021 - 5. August 2021)
  In: Keith S. Deacon, Ronald E. Meyers (ed.): Proceedings of SPIE - The International Society for Optical Engineering 2021
  DOI: 10.1117/12.2593986
• Popp A., Geilen A., Walter D., Chemnitz M., Junaid S., Poulton CG., Marquardt C., Schmidt MA., Stiller B.:
  Localized temperature and pressure measurements inside CS2-filled fiber using stimulated Brillouin scattering
  2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 (Munich, DEU, 21. June 2021 - 25. June 2021)
  In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 2021
  DOI: 10.1109/CLEO/Europe-EQEC52157.2021.9542349
  URL: https://opg.optica.org/abstract.cfm?uri=CLEO_Europe-2021-ch_12_3
• Richter S., Thornton M., Khan I., Scott H., Jaksch K., Vogl U., Stiller B., Leuchs G., Marquardt C., Korolkova N.:
  Agile and Versatile Quantum Communication: Signatures and Secrets
  In: Physical Review X 11 (2021), Article No.: 011038
  ISSN: 2160-3308
  DOI: 10.1103/PhysRevX.11.011038

2020

• Averchenko V., Sych D., Marquardt C., Leuchs G.:
  Efficient generation of temporally shaped photons using nonlocal spectral filtering
  In: Physical Review A 101 (2020)
  ISSN: 1050-2947
  DOI: 10.1103/PhysRevA.101.013808
• Dirmeier T., Tiedau J., Khan I., Ansari V., Müller C., Silberhorn C., Marquardt C., Leuchs G.:
  Distillation of squeezing using an engineered pulsed parametric down-conversion source
  In: Optics Express 28 (2020), p. 30784-30796
  ISSN: 1094-4087
  DOI: 10.1364/OE.402178
• Massaro M., Ansari V., Schlue F., Luo KH., Herrmann H., Brecht B., Silberhorn C., Dirmeier T., Marquardt C., Leuchs G.:
  Time-frequency multiplexed single-photon source based on LiNbO3 modulators
  CLEO: QELS_Fundamental Science, CLEO_QELS 2020 (Washington, DC, 10. May 2020 - 15. May 2020)
  In: Optics InfoBase Conference Papers 2020
  DOI: 10.1364/CLEO_QELS.2020.FTu3C.7
• Milovancev D., Vokic N., Pacher C., Khan I., Marquardt C., Boxleitner W., Hubel H., Schrenk B.:
  Towards Integrating True Random Number Generation in Coherent Optical Transceivers
  In: IEEE Journal of Selected Topics in Quantum Electronics 26 (2020), Article No.: 9126149
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2020.3004206
• Müller C., Seshadreesan KP., Peuntinger C., Marquardt C.:
  Binary homodyne detection for observing quadrature squeezing in satellite links
  In: Physical Review Research 2 (2020)
  ISSN: 2643-1564
  DOI: 10.1103/PhysRevResearch.2.033523
  URL: https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.033523
• Popp A., Distler V., Jaksch K., Sedlmeir F., Mueller CR., Haarlammert N., Schreiber T., Marquardt C., Tuennermann A., Leuchs G.:
  Quantum-limited measurements of intensity noise levels in Yb-doped fiber amplifiers
  In: Applied Physics B-Lasers and Optics 126 (2020), Article No.: 130
  ISSN: 0946-2171
  DOI: 10.1007/s00340-020-07476-7
• Shafiee G., Strekalov D., Otterpohl A., Sedlmeir F., Schunk G., Vogl U., Schwefel HGL., Leuchs G., Marquardt C.:
  Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime
  In: New Journal of Physics 22 (2020)
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/ab9a87

2019

• Haber R., Scharnagl J., Schilling K., Weinfurter H., Marquardt C., Moll F., Grünefeld M., Freiwang P., Rosenfeld W., Bayraktar Ö., Rödiger B., Schmidt C.:
  Fundamentally secure data with the help of quantum key distribution on CubeSats
  70th International Astronautical Congress, IAC 2019 (Washington, DC, USA, 21. October 2019 - 25. October 2019)
  In: Proceedings of the International Astronautical Congress, IAC 2019
• Leuchs G., Marquardt C., Sánchez-Soto LL., Strekalov DV.:
  R&D advances for quantum communication systems
  Elsevier, 2019
  ISBN: 9780128165027
  DOI: 10.1016/B978-0-12-816502-7.00014-2
• Leuchs G., Müller C., Sedlmeir F., Chatterjee S., Haarlammert N., Jauregui C., Schreiber T., Limpert J., Tunnermann A., Marquardt C.:
  Quantum Limits of Coherent Beam Combining
  2018 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2018 (Wanchai, HKG, 29. July 2018 - 3. August 2018)
  In: 2018 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2018 2019
• Marquardt C.:
  Telecom Compatible Quantum Key Distribution - Learning from Classical Coherent Communication
  2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 (San Diego, CA, 3. March 2019 - 7. March 2019)
  In: 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings 2019
• Moll F., Botter T., Marquardt C., Pusey D., Shrestha A., Reeves A., Jaksch K., Guenthner K., Bayraktar O., Mueller-Hirschkorn C., Gallardo AD., Gonzalez DD., Rosenfeld W., Freiwang P., Leuchs G., Weinfurter H.:
  Stratospheric QKD: Feasibility analysis and free-space optics system concept
  Quantum Technologies and Quantum Information Science V 2019 (Strasbourg, 10. September 2019 - 11. September 2019)
  In: Mark T. Gruneisen, Miloslav Dusek, Paul M. Alsing, John G. Rarity (ed.): Proceedings of SPIE - The International Society for Optical Engineering 2019
  DOI: 10.1117/12.2539076
• Müller C., Sedlmeir F., Martynov VO., Marquardt C., Andrianov AV., Leuchs G.:
  The standard quantum limit of coherent beam combining
  In: New Journal of Physics 21 (2019)
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/ab4292
• Müller CR., Seshadreesan KP., Peuntinger C., Marquardt C.:
  Binary Homodyne Detection for Observing Quadrature Squeezing in Satellite Links
  2018 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2018 (Wanchai, HKG, 29. July 2018 - 3. August 2018)
  In: 2018 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2018 2019
• Otterpohl A., Sedlmeir F., Vogl U., Dirmeier T., Shafiee G., Schunk G., Strekalov DV., Schwefel H., Gehring T., Andersen UL., Leuchs G., Marquardt C.:
  Squeezed vacuum states from a whispering gallery mode resonator
  In: Optica 6 (2019), p. 1375-1380
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.6.001375
• Popp A., Bock V., Sedlmeir F., Muller CR., Haarlammert N., Schreiber T., Marquardt C., Tunnermann A., Leuchs G.:
  Investigation of noise sources down to the shot-noise limit in Yb-doped fiber amplifers for TMI investigations
  2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 (Munich, 23. June 2019 - 27. June 2019)
  In: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 2019
  DOI: 10.1109/CLEOE-EQEC.2019.8873411
• Ruppert L., Peuntinger C., Heim B., Günthner K., Usenko VC., Elser DA., Leuchs G., Filip R., Marquardt C.:
  Fading channel estimation for free-space continuous-variable secure quantum communication
  In: New Journal of Physics 21 (2019)
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/ab5dd3

2018

• Bouchard F., Sit A., Hufnagel F., Abbas A., Zhang Y., Heshami K., Fickler R., Marquardt C., Leuchs G., Boyd RW., Karimi E.:
  Quantum cryptography with twisted photons through an outdoor underwater channel
  In: Optics Express 26 (2018), p. 22563-22573
  ISSN: 1094-4087
  DOI: 10.1364/OE.26.022563
• Joshi SK., Pienaar J., Ralph TC., Cacciapuoti L., Mccutcheon W., Rarity J., Giggenbach D., Lim JG., Makarov V., Fuentes I., Scheidl T., Beckert E., Bourennane M., Bruschi DE., Cabello A., Capmany J., Carrasco-Casado A., Diamanti E., Dusek M., Elser D., Gulinatti A., Hadfield RH., Jennewein T., Kaltenbaek R., Krainak MA., Lo HK., Marquardt C., Milburn G., Peev M., Poppe A., Pruneri V., Renner R., Salomon C., Skaar J., Solomos N., Stipcevic M., Torres JP., Toyoshima M., Villoresi P., Walrnsley I., Weihs G., Weinfurter H., Zeilinger A., Zukowski M., Ursin R.:
  Space QUEST mission proposal: Experimentally testing decoherence due to gravity
  In: New Journal of Physics 20 (2018), Article No.: 063016
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/aac58b
• Khan I., Heim B., Neuzner A., Marquardt C.:
  Satellite-based QKD
  In: Optics and Photonics News 29 (2018), p. 26-33
  ISSN: 1047-6938
  DOI: 10.1364/opn.29.2.000026
• Lavery MPJ., Abadi MM., Bauer R., Brambilla G., Cheng L., Cox MA., Dudley A., Ellis AD., Fontaine NK., Kelly AE., Marquardt C., Matlhane S., Ndagano B., Petruccione F., Slavik R., Romanato F., Rosales-Guzman C., Roux FS., Roux K., Wang J., Forbes A.:
  Tackling Africa's digital divide 706 639/624/1075/187 comment
  In: Nature Photonics 12 (2018), p. 249-252
  ISSN: 1749-4885
  DOI: 10.1038/s41566-018-0162-z
• Lemke NM., Weinfurter H., Marquardt C., Moll F., Haber R., Grünefeld M., Seidel ST., Freiwang P., Rosenfeld W., Bayraktar Ö., Rödiger B., Schmidt C., Schilling K.:
  Qube - Quantum key distribution with CubeSat
  69th International Astronautical Congress: #InvolvingEveryone, IAC 2018 (Bremen, DEU, 1. October 2018 - 5. October 2018)
  In: Proceedings of the International Astronautical Congress, IAC 2018
• Muller CR., Seshadreesan KP., Leuchs G., Marquardt C.:
  Feasibility of squeezing detection over satellite links
  2017 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2017 (Naha, Okinawa, 14. November 2017 - 16. November 2017)
  In: 2017 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2017 2018
  DOI: 10.1109/ICSOS.2017.8357432
• Otterpohl A., Sedlmeir F., Shafiee G., Dirmeier T., Vogl U., Schunk G., Strekalov DV., Schwefel HG., Gehring T., Andersen UL., Leuchs G., Marquardt C.:
  Squeezed vacuum states from a whispering gallery mode resonator
  Frontiers in Optics, FIO 2018 (Washington, DC, USA, 16. September 2018 - 20. September 2018)
  In: Optics InfoBase Conference Papers 2018
  DOI: 10.1364/FIO.2018.FW7B.3
• Srivathsan B., Fischer M., Averchenko VA., Alber L., Strekalov DV., Marquardt C., Sondermann M., Leuchs G.:
  Optimizing the interaction of light with a single atom in free space
  MODERN PROBLEMS OF LASER PHYSICS The VIII International Symposium MPLP-2018 (Novosibirsk, 25. August 2018 - 1. September 2018)
  In: Ofset-TM (ed.): abstracts of the report at the conference 2018
  URL: https://www.elibrary.ru/item.asp?id=35469963
• Usenko VC., Peuntinger C., Heim B., Guenthner K., Derkach I., Elser D., Marquardt C., Filip R., Leuchs G.:
  Stabilization of transmittance fluctuations caused by beam wandering in continuous-variable quantum communication over free-space atmospheric channels
  In: Optics Express 26 (2018), p. 31106-31115
  ISSN: 1094-4087
  DOI: 10.1364/OE.26.031106

2017

• Averchenko V., Sych D., Schunk G., Vogl U., Marquardt C., Leuchs G.:
  Temporal shaping of single photons enabled by entanglement
  In: Physical Review A 96 (2017), Article No.: 043822
  ISSN: 1050-2947
  DOI: 10.1103/PhysRevA.96.043822
• Elser D., Günthner K., Khan I., Stiller B., Bayraktar Ö., Müller C., Saucke K., Tröndle D., Heine F., Seel S., Greulich P., Zech H., Gütlich B., Richter I., Philipp-May S., Marquardt C., Leuchs G.:
  Quantum measurements of signals from the Alphasat TDP1 laser communication terminal
  International Conference on Space Optics, ICSO 2016 (Biarritz, FRA, 18. October 2016 - 21. October 2016)
  In: Bruno Cugny, Nikos Karafolas, Zoran Sodnik (ed.): Proceedings of SPIE - The International Society for Optical Engineering 2017
  DOI: 10.1117/12.2296184
• Günthner K., Khan I., Elser D., Stiller B., Bayraktar Ö., Müller C., Saucke K., Tröndle D., Heine F., Seel S., Greulich P., Zech H., Gütlich B., Philipp-May S., Marquardt C., Leuchs G.:
  Quantum-limited measurements of optical signals from a satellite in geostationary earth orbit
  European Quantum Electronics Conference, EQEC 2017 (Munich, DEU, 25. June 2017 - 29. June 2017)
  In: Optics InfoBase Conference Papers 2017
• Günthner K., Khan I., Elser DA., Stiller B., Bayraktar Ö., Mueller CR., Saucke K., Troendle D., Heine F., Seel S., Greulich P., Zech H., Guetlich B., Philipp-May S., Marquardt C., Leuchs G.:
  Quantum-limited measurements of optical signals from a geostationary satellite
  In: Optica 4 (2017), p. 611-616
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.4.000611
• Heine F., Saucke K., Troendle D., Motzigemba M., Bischl H., Elser D., Marquardt C., Henniger H., Meyer R., Richter I., Sodnik Z.:
  Laser based bi-directional Gbit ground links with the Tesat transportable adaptive optical ground station
  Free-Space Laser Communication and Atmospheric Propagation XXIX (San Francisco, CA, USA, 30. January 2017 - 1. February 2017)
  In: Don M. Boroson, Hamid Hemmati (ed.): Proceedings of SPIE - The International Society for Optical Engineering 2017
  DOI: 10.1117/12.2252826
• Khan I., Elser D., Dirmeier T., Marquardt C., Leuchs G.:
  Quantum communication with coherent states of light
  In: Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences 375 (2017), Article No.: 20160235
  ISSN: 1364-503X
  DOI: 10.1098/rsta.2016.0235
• Lavery MPJ., Peuntinger C., Günthner K., Banzer P., Elser DA., Boyd RW., Padgett MJ., Marquardt C., Leuchs G.:
  Free-space propagation of high-dimensional structured optical fields in an urban environment
  In: Science Advances 3 (2017), Article No.: e1700552
  ISSN: 2375-2548
  DOI: 10.1126/sciadv.1700552
• Müller C., Leuchs G., Marquardt C., Andersen UL.:
  Optimally cloned binary coherent states
  In: Physical Review A 96 (2017), Article No.: 042311
  ISSN: 1050-2947
  DOI: 10.1103/PhysRevA.96.042311
• Müller CR., Seshadreesan KP., Peuntinger C., Leuchs G., Marquardt C.:
  Witnessing quantum squeezing with binary Homodyne detection
  European Quantum Electronics Conference, EQEC 2017 (Munich, DEU, 25. June 2017 - 29. June 2017)
  In: Optics InfoBase Conference Papers 2017
  URL: https://opg.optica.org/abstract.cfm?uri=EQEC-2017-EB_P_1
• Rueda A., Sedlmeir F., Collodo M., Vogl U., Stiller B., Schunk G., Strekalov DV., Marquardt C., Fink JM., Painter O., Leuchs G., Schwefel HG.:
  Single sideband microwave to optical photon conversion-an electro-optic realization
  Nonlinear Optics, NLO 2017 (Waikoloa, HI, USA, 17. July 2017 - 21. July 2017)
  In: Optics InfoBase Conference Papers 2017
  DOI: 10.1364/NLO.2017.NM3A.1
• Sedlmeir F., Foreman MR., Vogl U., Zeltner R., Schunk G., Strekalov DV., Marquardt C., Leuchs G., Schwefel HGL.:
  Polarization-Selective Out-Coupling of Whispering-Gallery Modes
  In: Physical Review Applied 7 (2017), Article No.: 024029
  ISSN: 2331-7019
  DOI: 10.1103/PhysRevApplied.7.024029
• Sit A., Bouchard F., Fickler R., Gagnon-Bischoff J., Larocque H., Heshami K., Elser D., Peuntinger C., Günthner K., Heim B., Marquardt C., Leuchs G., Boyd RW., Karimi E.:
  High-dimensional intracity quantum cryptography with structured photons
  In: Optica 4 (2017), p. 1006-1010
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.4.001006
• Vasylyev DY., Semenov AA., Vogel W., Guenthner K., Thurn A., Bayraktar O., Marquardt C.:
  Free-space quantum links under diverse weather conditions
  In: Physical Review A 96 (2017), Article No.: 043856
  ISSN: 1050-2947
  DOI: 10.1103/PhysRevA.96.043856

2016

• Andersen UL., Gehring T., Marquardt C., Leuchs G.:
  30 years of squeezed light generation
  In: Physica Scripta 91 (2016), Article No.: 053001
  ISSN: 1402-4896
  DOI: 10.1088/0031-8949/91/5/053001
• Chille V., Aiello A., Banzer P., Leuchs G., Marquardt C., Treps N., Fabre C.:
  Quantum uncertainty in the beam width for optical spatial modes
  2016 Conference on Lasers and Electro-Optics, CLEO 2016 (San Jose, CA, USA, 5. June 2016 - 10. June 2016)
  In: 2016 Conference on Lasers and Electro-Optics, CLEO 2016 2016
  DOI: 10.1364/cleo_qels.2016.ff1c.2
• Chille V., Berg-Johansen S., Semmler M., Banzer P., Aiello A., Leuchs G., Marquardt C.:
  Experimental generation of amplitude squeezed vector beams
  In: Optics Express 24 (2016), p. 12385-12394
  ISSN: 1094-4087
  DOI: 10.1364/OE.24.012385
• Chille V., Treps N., Fabre C., Leuchs G., Marquardt C., Aiello A.:
  Detecting the spatial quantum uncertainty of bosonic systems
  In: New Journal of Physics 18 (2016), Article No.: 093004
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/18/9/093004
• Croal C., Peuntinger C., Heim B., Khan I., Marquardt C., Leuchs G., Wallden P., Andersson E., Korolkova N.:
  Free-Space Quantum Signatures Using Heterodyne Measurements
  In: Physical Review Letters 117 (2016), Article No.: 100503
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.117.100503
• Derkach I., Peuntinger C., Ruppert L., Heim B., Gunthner K., Usenko VC., Elser D., Marquardt C., Filip R., Leuchs G.:
  Proof-of-principle test of coherent-state continuous variable quantum key distribution through turbulent atmosphere
  SPIE Security + Defence (Edinburgh)
  DOI: 10.1117/12.2242107
• Elser D., Günthner K., Khan I., Stiller B., Bayraktar Ö., Müller C., Saucke K., Tröndle D., Heine F., Seel S., Greulich P., Zech H., Gütlich B., Richter I., Meyer R., Marquardt C., Leuchs G.:
  Quantum-limited measurements of signals from geostationary earth orbit
  42nd European Conference on Optical Communication, ECOC 2016 (Dusseldorf, DEU, 18. September 2016 - 22. September 2016)
  In: European Conference on Optical Communication, ECOC 2016
• Elser DA., Günthner K., Khan I., Stiller B., Marquardt C., Leuchs G., Saucke K., Tröndle D., Heine F., Seel S., Greulich P., Zech H., Gütlich B., Richter I., Meyer R.:
  Satellite quantum communication via the alphasat laser communication terminal quantum signals from 36 thousand kilometers above earth
  IEEE International Conference on Space Optical Systems and Applications, ICSOS 2015 (New Orleans, LA, 26. October 2015 - 28. October 2015)
  In: 2015 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2015 2016
  DOI: 10.1109/ICSOS.2015.7425077
• Jain N., Stiller B., Khan I., Elser DA., Marquardt C., Leuchs G.:
  Attacks on practical quantum key distribution systems (and how to prevent them)
  In: Contemporary Physics 57 (2016), p. 366-387
  ISSN: 0010-7514
  DOI: 10.1080/00107514.2016.1148333
• Lavery MP., Peuntinger C., Günthner K., Bauer T., Banzer P., Elser DA., Boyd RW., Padgett MJ., Marquardt C., Leuchs G.:
  Long distance free-space propagation of light carrying orbital angular momentum
  Applications of Lasers for Sensing and Free Space Communications, LSC 2016 (Boston, MA, USA, 30. October 2016 - 3. November 2016)
  In: Optics InfoBase Conference Papers 2016
  DOI: 10.1364/LSC.2016.LTh3B.1
• Leuchs G., Marquardt C.:
  Continuous variable free space quantum communication
  Applications of Lasers for Sensing and Free Space Communications, LSC 2016 (Boston, MA, USA, 30. October 2016 - 3. November 2016)
  In: Optics InfoBase Conference Papers 2016
  DOI: 10.1364/lsc.2016.lw1b.1
• Marquardt C.:
  Practical continuous variable QKD in fiber and free space systems
  Frontiers in Optics 2016 (Rochester, NY, 17. October 2016 - 21. October 2016)
  DOI: 10.1364/FIO.2016.FTh5F.2
• Mueller CR., Peuntinger C., Dirmeier T., Khan I., Vogl U., Marquardt C., Leuchs G., Sanchez-Soto LL., Teo YS., Hradil Z., Rehacek J.:
  Evading Vacuum Noise: Wigner Projections or Husimi Samples?
  In: Physical Review Letters 117 (2016), Article No.: 070801
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.117.070801
• Müller C., Madsen LS., Klimov AB., Sanchez-Soto LL., Leuchs G., Marquardt C., Andersen UL.:
  Parsing polarization squeezing into Fock layers
  In: Physical Review A 93 (2016), Article No.: 033816
  ISSN: 1050-2947
  DOI: 10.1103/PhysRevA.93.033816
• Müller CR., Peuntinger C., Dirmeier T., Khan I., Vogl U., Marquardt C., Leuchs G., Sánchez-Soto LL., Teo YS., Hradil Z., Rehácek J.:
  Overcoming vacuum noise: The unforeseen benefits of quantum heterodyne detection
  Frontiers in Optics, FiO 2016 (Rochester, NY, USA, 17. October 2016 - 21. October 2016)
  In: Optics InfoBase Conference Papers 2016
  DOI: 10.1364/FIO.2016.FF3D.3
• Rueda A., Sedlmeir F., Collodo M., Vogl U., Stiller B., Schunk G., Strekalov DV., Marquardt C., Fink JM., Painter O., Leuchs G., Schwefel HG.:
  Efficient single sideband microwave to optical conversion using a LiNbO3 WGM-resonator
  2016 Conference on Lasers and Electro-Optics, CLEO 2016 (San Jose, CA, USA, 5. June 2016 - 10. June 2016)
  In: 2016 Conference on Lasers and Electro-Optics, CLEO 2016 2016
  DOI: 10.1364/cleo_si.2016.sf2g.3
• Rueda A., Sedlmeir F., Collodo M., Vogl U., Stiller B., Schunk G., Strekalov DV., Marquardt C., Fink JM., Painter O., Leuchs G., Schwefel HG.:
  Nonlinear single sideband microwave to optical conversion using an electro-optic WGM-resonator
  Nonlinear Photonics, NP 2016 (Sydney, 5. September 2016 - 8. September 2016)
  In: Optics InfoBase Conference Papers 2016
  DOI: 10.1364/NP.2016.NTh3A.6
• Rueda A., Sedlmeir F., Collodo M., Vogl U., Stiller B., Schunk G., Strekalov DV., Marquardt C., Fink JM., Painter O., Leuchs G., Schwefel HGL.:
  Efficient microwave to optical photon conversion: An electro-optical realization
  In: Optica 3 (2016), p. 597-604
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.3.000597
• Schunk G., Shafiee G., Vogl U., Strekalov D., Otterpohl A., Sedlmeir F., Schwefel HG., Leuchs G., Marquardt C.:
  Towards two-photon interference with a whispering gallery photon pair source
  Nonlinear Photonics, NP 2016 (Sydney, AUS, 5. September 2016 - 8. September 2016)
  In: Optics InfoBase Conference Papers 2016
  DOI: 10.1364/NP.2016.NTh2A.5
• Schunk G., Vogl U., Sedlmeir F., Strekalov DV., Otterpohl A., Averchenko V., Schwefel HGL., Leuchs G., Marquardt C.:
  Frequency tuning of single photons from a whispering-gallery mode resonator to MHz-wide transitions
  In: Journal of Modern Optics 63 (2016), p. 2058-2073
  ISSN: 0950-0340
  DOI: 10.1080/09500340.2016.1148211
• Semmler M., Berg-Johansen S., Chille V., Gabriel C., Banzer P., Aiello A., Marquardt C., Leuchs G.:
  Single-mode squeezing in arbitrary spatial modes
  In: Optics Express 24 (2016), p. 7633-7642
  ISSN: 1094-4087
  DOI: 10.1364/OE.24.007633
• Strekalov DV., Marquardt C., Matsko AB., Schwefel HGL., Leuchs G.:
  Nonlinear and quantum optics with whispering gallery resonators
  In: Journal of Optics 18 (2016), Article No.: 123002
  ISSN: 2040-8978
  DOI: 10.1088/2040-8978/18/12/123002
• Vogl U., Sedlmeir F., Joly NY., Marquardt C., Leuchs G., Marquardt C.:
  Generation of non-classical light via selfinduced transparency in mercury-filled hollow core photonic crystal fibers
  Frontiers in Optics, FiO 2016 (Rochester, NY, USA, 17. October 2016 - 21. October 2016)
  In: Optics InfoBase Conference Papers 2016
  DOI: 10.1364/FIO.2016.FW5F.4

2015

• Aiello A., Töppel F., Marquardt C., Giacobino E., Leuchs G.:
  Quantum-like nonseparable structures in optical beams
  In: New Journal of Physics 17 (2015), Article No.: 043024
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/17/4/043024
• Averchenko VA., Förtsch M., Fischer M., Aiello A., Marquardt C., Leuchs G.:
  Temporal shaping of heralded photons in a resonator-assisted parametric down-conversion with modulated pump pulses
  European Quantum Electronics Conference, EQEC 2015 (Munich, DEU, 21. June 2015 - 25. June 2015)
  In: Optics InfoBase Conference Papers 2015
• Berg-Johansen S., Töppel F., Stiller B., Banzer P., Ornigotti M., Giacobino E., Leuchs G., Aiello A., Marquardt C.:
  Classically entangled optical beams for high-speed kinematic sensing
  In: Optica 2 (2015), p. 864-868
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.2.000864
• Berg-Johansen S., Töppel F., Stiller B., Banzer P., Ornigotti M., Giacobino E., Leuchs G., Aiello A., Marquardt C.:
  GHz kinematic sensing with classically entangled beams of light
  European Quantum Electronics Conference, EQEC 2015 (Munich, 21. June 2015 - 25. June 2015)
  In: Optics InfoBase Conference Papers 2015
• Chille V., Banzer P., Aiello A., Leuchs G., Marquardt C., Treps N., Fabre C.:
  Quantum uncertainty in the beam width of spatial optical modes
  In: Optics Express 23 (2015), p. 32777-32787
  ISSN: 1094-4087
  DOI: 10.1364/OE.23.032777
• Chille V., Quinn N., Peuntinger C., Croal C., Mista L., Marquardt C., Leuchs G., Korolkova N.:
  Quantum nature of Gaussian discord: Experimental evidence and role of system-environment correlations
  In: Physical Review A - Atomic, Molecular, and Optical Physics 91 (2015), Article No.: 050301
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.91.050301
• Croal C., Peuntinger C., Chille V., Marquardt C., Leuchs G., Korolkova N., Mista L.:
  Entangling the Whole by Beam Splitting a Part
  In: Physical Review Letters 115 (2015), Article No.: 190501
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.115.190501
• Foertsch M., Gerrits T., Stevens MJ., Strekalov D., Schunk G., Fuerst JU., Vogl U., Sedlmeir F., Schwefel HGL., Leuchs G., Nam SW., Marquardt C.:
  Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors
  In: Journal of Optics 17 (2015), Article No.: 065501
  ISSN: 2040-8978
  DOI: 10.1088/2040-8978/17/6/065501
• Foertsch M., Schunk G., Fuerst JU., Strekalov D., Gerrits T., Stevens MJ., Sedlmeir F., Schwefel HGL., Nam SW., Leuchs G., Marquardt C.:
  Highly efficient generation of single-mode photon pairs from a crystalline whispering-gallery-mode resonator source
  In: Physical Review A - Atomic, Molecular, and Optical Physics 91 (2015), Article No.: 023812
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.91.023812
• Jain N., Stiller B., Khan I., Makarov V., Marquardt C., Leuchs G.:
  Risk analysis of Trojan-horse attacks on practical quantum key distribution systems
  In: IEEE Journal of Selected Topics in Quantum Electronics 21 (2015), p. 168-177
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2014.2365585
• Lavery MP., Heim B., Peuntinger C., Magaña-Loaiza OS., Karimi E., Bauer T., Banzer P., Marquardt C., Willner AE., Boyd RW., Padgett MJ., Leuchs G.:
  Study of turbulence induced orbital angular momentum channel crosstalk in a 1.6km free-space optical link
  CLEO: Science and Innovations, CLEO-SI 2015 (San Jose, CA, 10. May 2015 - 15. May 2015)
  In: CLEO: Science and Innovations, CLEO-SI 2015 2015
  DOI: 10.1364/CLEO_SI.2015.STu1L.4
• Leuchs G., Marquardt C., Schwefel H.:
  Nonlinear Quantum Optics in a Millimeter Size Whispering Gallery Mode Resonator
  Nonlinear Optics, NLO 2015 (Kauai, HI, USA, 26. July 2015 - 31. July 2015)
  In: Nonlinear Optics, NLO 2015 2015
  DOI: 10.1364/NLO.2015.NW2A.5
• Mueller CR., Marquardt C.:
  A robust quantum receiver for phase shift keyed signals
  In: New Journal of Physics 17 (2015), p. 1-12
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/17/3/032003
• Peano V., Schwefel H., Marquardt C., Marquardt F.:
  Intracavity Squeezing Can Enhance Quantum-Limited Optomechanical Position Detection through Deamplification
  In: Physical Review Letters 115 (2015), Article No.: 243603
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.115.243603
• Schunk G., Vogl U., Strekalov DV., Förtsch M., Sedlmeir F., Schwefel H., Göbelt M., Christiansen S., Leuchs G., Marquardt C.:
  Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source
  In: Optica 2 (2015), p. 773-778
  ISSN: 2334-2536
  DOI: 10.1364/OPTICA.2.000773
• Stiller B., Khan I., Jain N., Jouguet P., Kunz-Jacques S., Diamanti E., Marquardt C., Leuchs G.:
  Quantum hacking of continuous-variable quantum key distribution systems: Realtime Trojan-horse attacks
  Conference on Lasers and Electro-Optics, CLEO 2015 (San Jose, CA, 10. May 2015 - 15. May 2015)
  In: Conference on Lasers and Electro-Optics Europe - Technical Digest 2015
• Töppel F., Aiello A., Marquardt C., Giacobino E., Leuchs G.:
  Classical entanglement: Theory and application
  European Quantum Electronics Conference, EQEC 2015 (Munich, DEU, 21. June 2015 - 25. June 2015)
  In: Optics InfoBase Conference Papers 2015
• Vogl U., Joly NY., Russell PSJ., Marquardt C., Leuchs G.:
  Squeezed light and self-induced transparency in mercury-filled hollow core photonic crystal fibers
  2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015 (Munich, DEU, 21. June 2015 - 25. June 2015)
  In: Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015 2015
• Zhong W., Stiller B., Elser DA., Heim B., Marquardt C., Leuchs G.:
  Depolarized guided acoustic wave Brillouin scattering in hollow-core photonic crystal fibers
  In: Optics Express 23 (2015), p. 27707-27714
  ISSN: 1094-4087
  DOI: 10.1364/OE.23.027707

2014

• Croal C., Mišta L., Chille V., Peuntinger C., Marquardt C., Leuchs G., Korolkova N.:
  Entanglement creation by locally splitting a discordant state
  CLEO: QELS_Fundamental Science, CLEO_QELS 2014 (USA, 8. June 2014 - 13. June 2014)
  In: Optics InfoBase Conference Papers 2014
  DOI: 10.1364/cleo_qels.2014.fth1a.8
• Förtsch M., Schunk G., Josef Fürst ., Strekalov D., Gerrits T., Stevens J. MJ., Sedlmeir F., Schwefel G.L. HG., Nam SW., Leuchs G., Marquardt C.:
  Highly efficient generation of narrow-band single-mode photon pairs from a whispering gallery mode resonator
  CLEO: QELS_Fundamental Science, CLEO_QELS 2014 (USA, 8. June 2014 - 13. June 2014)
  In: Optics InfoBase Conference Papers 2014
  DOI: 10.1364/cleo_qels.2014.fw3a.6
• Heim B., Peuntinger C., Killoran N., Khan I., Wittmann C., Marquardt C., Leuchs G.:
  Atmospheric continuous-variable quantum communication
  In: New Journal of Physics 16 (2014), Article No.: 113018
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/16/11/113018
• Jain N., Anisimova E., Khan I., Makarov V., Marquardt C., Leuchs G.:
  Trojan-horse attacks threaten the security of practical quantum cryptography
  In: New Journal of Physics 16 (2014), Article No.: 123030
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/16/12/123030
• Korger J., Aiello A., Chille V., Wittmann C., Lindlein N., Marquardt C., Leuchs G.:
  Observation of the Geometric Spin Hall Effect of Light
  In: Physical Review Letters 112(11) (2014), p. 113902
  ISSN: 0031-9007
• Marquardt C., Müller CR., Leuchs G.:
  Practical limits of an optimized quantum receiver
  Laser Science, LS 2014 (Tucson, AZ, USA, 19. October 2014 - 23. October 2014)
  In: Optics InfoBase Conference Papers 2014
  DOI: 10.1364/ls.2014.ltu2i.2
• Muller CR., Leuchs G., Marquardt C.:
  QPSK receiver outperforming the standard quantum limit for any signal power
  CLEO: QELS_Fundamental Science, CLEO_QELS 2014 (USA, 8. June 2014 - 13. June 2014)
  In: Optics InfoBase Conference Papers 2014
  DOI: 10.1364/cleo_qels.2014.fm3a.6
• Müller CR., Leven A., Bülow H., Schmalen L., Leuchs G., Marquardt C.:
  M-ary phase shift keying receiver beating the standard quantum limit for any signal power
  2014 European Conference on Optical Communication, ECOC 2014 (Cannes, FRA, 21. September 2014 - 25. September 2014)
  In: European Conference on Optical Communication, ECOC 2014
  DOI: 10.1109/ECOC.2014.6964182
• Peuntinger C., Heim B., Mueller CR., Gabriel C., Marquardt C., Leuchs G.:
  Distribution of squeezed states through an atmospheric channel
  In: Physical Review Letters 113 (2014), Article No.: 060502
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.113.060502
• Schunk G., Fuerst JU., Foertsch M., Strekalov DV., Vogl U., Sedlmeir F., Schwefel HGL., Leuchs G., Marquardt C.:
  Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern
  In: Optics Express 22 (2014), p. 30795-30806
  ISSN: 1094-4087
  DOI: 10.1364/OE.22.030795
• Schunk G., Vogl U., Förtsch M., Strekalov D., Sedlmeir F., Schwefel HG., Leuchs G., Marquardt C.:
  Addressing RB and CS transitions with a tunable source of photon pairs
  European Quantum Electronics Conference, EQEC 2015 (Munich, DEU, 21. June 2015 - 25. June 2015)
  In: Optics InfoBase Conference Papers 2014
• Toeppel F., Aiello A., Marquardt C., Giacobino E., Leuchs G.:
  Classical entanglement in polarization metrology
  In: New Journal of Physics 16 (2014), Article No.: 073019
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/16/7/073019
• Vogl U., Peuntinger C., Joly NY., Russell PSJ., Marquardt C., Leuchs G.:
  Atomic mercury vapor inside a hollow-core photonic crystal fiber
  In: Optics Express 22 (2014), p. 29375-29381
  ISSN: 1094-4087
  DOI: 10.1364/OE.22.029375

2013

• Banzer P., Neugebauer M., Aiello A., Marquardt C., Lindlein N., Bauer T., Leuchs G.:
  Demonstration of a state of light with purely transverse angular momentum
  Quantum Information and Measurement, QIM 2013 (USA, 17. June 2013 - 20. June 2013)
  In: Optics InfoBase Conference Papers 2013
  DOI: 10.1364/CQO.2013.T2A.1
• Banzer P., Neugebauer M., Aiello A., Marquardt C., Lindlein N., Bauer T., Leuchs G.:
  The photonic wheel - demonstration of a state of light with purely transverse angular momentum
  In: Journal of the European Optical Society: Rapid Publications 8 (2013), p. 13032
  ISSN: 1990-2573
• De La Hoz P., Klimov AB., Bjork G., Kim Y-., Mueller C., Marquardt C., Leuchs G., Sanchez-Soto LL., Marquardt C.:
  Multipolar hierarchy of efficient quantum polarization measures
  In: Physical Review A - Atomic, Molecular, and Optical Physics 88 (2013), Article No.: 063803
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.88.063803
• Fortsch M., Gerrits T., Stevens MJ., Furst JU., Schunk G., Sedlmeir F., Schwefel HG., Strekalov D., Nam SW., Leuchs G., Marquardt C.:
  Near-infrared spectroscopy on a single photon level
  10th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2013 (JPN, 30. June 2013 - 4. July 2013)
  In: Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 2013
  DOI: 10.1109/CLEOPR.2013.6600356
• Förtsch M., Fürst J., Wittmann C., Strekalov D., Aiello A., Chekhova MV., Leuchs G., Silberhorn C., Marquardt C.:
  A versatile source of single photons for quantum information processing
  In: Nature Communications 4 (2013), Article No.: 1818
  ISSN: 2041-1723
  DOI: 10.1038/ncomms2838
• Harder G., Ansari V., Brecht B., Dirmeier T., Marquardt C., Silberhorn C.:
  An optimized photon pair source for quantum circuits
  In: Optics Express 21 (2013), p. 13975-13985
  ISSN: 1094-4087
  DOI: 10.1364/OE.21.013975
• Harder G., Ansari V., Brecht B., Dirmeier T., Marquardt C., Silberhorn C.:
  Decorrelated PDC source at telecom wavelengths with identical signal and idler
  International Quantum Electronics Conference, IQEC 2013 (DEU, 12. May 2013 - 16. May 2013)
  In: Optics InfoBase Conference Papers 2013
• Khan I., Wittmann C., Jain N., Killoran N., Luetkenhaus N., Marquardt C., Leuchs G.:
  Optimal working points for continuous-variable quantum channels
  In: Physical Review A - Atomic, Molecular, and Optical Physics 88 (2013), Article No.: 010302
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.88.010302
• Korger J., Kolb T., Banzer P., Aiello A., Wittmann C., Marquardt C., Leuchs G.:
  The polarization properties of a tilted polarizer
  In: Optics Express 21 (2013), p. 27032-27042
  ISSN: 1094-4087
  DOI: 10.1364/OE.21.027032
• Marquardt C.:
  Whispering gallery mode optical parametric oscillators
  Nonlinear Optics, NLO 2013 (USA, 21. July 2013 - 26. July 2013)
  In: Optics InfoBase Conference Papers 2013
• Marquardt C., Strekalov DV., Fürst J., Förtsch M., Leuchs G.:
  Nonlinear optics in crystalline: Whispering gallery resonators
  In: Optics and Photonics News 24 (2013), p. 38-45
  ISSN: 1047-6938
  DOI: 10.1364/OPN.24.7.000038
• Peuntinger C., Chille V., Mista L., Korolkova N., Foertsch M., Korger J., Marquardt C., Marquardt C., Leuchs G.:
  Distributing entanglement with separable states
  In: Physical Review Letters 111 (2013), Article No.: 230506
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.111.230506

2012

• Förtsch M., Fürst J., Wittmann C., Strekalov D., Aiello A., Silberhorn C., Marquardt C., Leuchs G.:
  Continuously adjustable narrow-band heralded single photon source
  2012 Conference on Lasers and Electro-Optics, CLEO 2012 (USA, 6. May 2012 - 11. May 2012)
  In: 2012 Conference on Lasers and Electro-Optics, CLEO 2012 2012
• Förtsch M., Schunk G., Sedlmeir F., Fürst J., Wittmann C., Strekalov D., Schwefel HG., Marquardt C., Leuchs G.:
  Mode-hop-free tunable optical parametric oscillator utilizing a whispering gallery mode resonator
  2012 Conference on Lasers and Electro-Optics, CLEO 2012 (USA, 6. May 2012 - 11. May 2012)
  In: 2012 Conference on Lasers and Electro-Optics, CLEO 2012 2012
• Gabriel C., Aiello A., Berg-Johansen S., Marquardt C., Leuchs G.:
  Tools for detecting entanglement between different degrees of freedom in quadrature squeezed cylindrically polarized modes
  In: European Physical Journal D 66 (2012), Article No.: 172
  ISSN: 1434-6060
  DOI: 10.1140/epjd/e2012-20735-y
• Gabriel C., Rigas I., Aiello A., Berg-Johansen S., van Loock P., Marquardt C., Leuchs G.:
  Cluster state generation with quadrature squeezed cylindrically polarized modes
  2012 Conference on Lasers and Electro-Optics, CLEO 2012 (USA, 6. May 2012 - 11. May 2012)
  In: 2012 Conference on Lasers and Electro-Optics, CLEO 2012 2012
• Gabriel C., Wittmann C., Hacker B., Mauerer W., Huntington E., Sabuncu M., Marquardt C., Leuchs G.:
  A high-speed secure quantum random number generator based on vacuum states
  2012 Conference on Lasers and Electro-Optics, CLEO 2012 (USA, 6. May 2012 - 11. May 2012)
  In: 2012 Conference on Lasers and Electro-Optics, CLEO 2012 2012
• Korger J., Aiello A., Chille V., Wittmann C., Banzer P., Lindlein N., Marquardt C., Leuchs G.:
  Direct measurement of the geometric spin hall effect of light
  Frontiers in Optics, FIO 2012 (Rochester, NY)
  DOI: 10.1364/FIO.2012.FTh1E.1
• Mueller CR., Stoklasa B., Peuntinger C., Gabriel C., Rehacek J., Hradil Z., Klimov AB., Leuchs G., Marquardt C., Sanchez-Soto LL.:
  Quantum polarization tomography of bright squeezed light
  In: New Journal of Physics 14 (2012), Article No.: 085002
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/14/8/085002
• Mueller CR., Wittmann C., Marek P., Filip R., Marquardt C., Leuchs G., Andersen UL.:
  Probabilistic cloning of coherent states without a phase reference
  In: Physical Review A - Atomic, Molecular, and Optical Physics 86 (2012), Article No.: 010305
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.86.010305
• Müller C., Usuga MA., Wittmann C., Takeoka M., Marquardt C., Andersen UL., Leuchs G.:
  Quadrature phase shift keying coherent state discrimination via a hybrid receiver
  In: New Journal of Physics 14 (2012), Article No.: 083009
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/14/8/083009
• Müller CR., Stoklasa B., Peuntinger C., Gabriel C., Rehácek J., Hradil Z., Klimov AB., Leuchs G., Marquardt C., Sánchez-Soto LL.:
  Quantum polarization tomography of bright squeezed light
  Frontiers in Optics, FIO 2012 (USA, 14. October 2012 - 18. October 2012)
  In: Frontiers in Optics, FIO 2012 2012
  DOI: 10.1364/fio.2012.ftu3a.27
• Müller CR., Usuga MA., Wittmann C., Takeoka M., Marquardt C., Andersen UL., Leuchs G.:
  Four-state discrimination scheme beyond the heterodyne limit
  2012 Conference on Lasers and Electro-Optics, CLEO 2012 (, 6. May 2012 - 11. May 2012)
  In: 2012 Conference on Lasers and Electro-Optics, CLEO 2012 2012
• Neugebauer M., Banzer P., Bauer T., Lindlein N., Aiello A., Marquardt C., Korger J., Leuchs G.:
  Experimental demonstration of the geometric spin hall effect of light in highly focused vector beams
  Quantum Electronics and Laser Science Conference, QELS 2012 (San Jose, CA)
  DOI: 10.1364/QELS.2012.QW1E.4
• Usenko VC., Heim B., Peuntinger C., Wittmann C., Marquardt C., Leuchs G., Filip R.:
  Entanglement of Gaussian states and the applicability to quantum key distribution over fading channels
  In: New Journal of Physics 14 (2012), Article No.: 093048
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/14/9/093048

2011

• Euser TG., Schmidt MA., Joly NY., Gabriel C., Marquardt C., Zang LY., Foertsch M., Banzer P., Brenn A., Elser D., Scharrer MG., Leuchs G., Russell PSJ.:
  Birefringence and dispersion of cylindrically polarized modes in nanobore photonic crystal fiber
  In: Journal of the Optical Society of America B-Optical Physics 28 (2011), p. 193-198
  ISSN: 0740-3224
  DOI: 10.1364/JOSAB.28.000193
• Fuerst JU., Strekalov DV., Elser D., Aiello A., Andersen UL., Marquardt C., Leuchs G.:
  Quantum Light from a Whispering-Gallery-Mode Disk Resonator
  In: Physical Review Letters 106 (2011), Article No.: 113901
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.106.113901
• Förtsch M., Schunk G., Fürst JU., Strekalov DV., Aiello A., Andersen UL., Marquardt C., Leuchs G.:
  Non-classical light generated in a whispering gallery mode parametric oscillator
  International Quantum Electronics Conference, IQEC 2011 (AUS, 28. August 2011 - 1. September 2011)
  In: Optics InfoBase Conference Papers 2011
• Fürst JU., Strekalov DV., Elser D., Aiello A., Andersen UL., Marquardt C., Leuchs G.:
  Low-threshold optical parametric oscillations in a whispering gallery mode resonator
  2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 2011
  DOI: 10.1109/CLEOE.2011.5942653
• Gabriel C., Aiello A., Zhong W., Euser TG., Joly NY., Banzer P., Foertsch M., Elser D., Andersen UL., Marquardt C., Russell PSJ., Leuchs G.:
  Entangling different degrees of freedom by quadrature squeezing cylindrically polarized modes
  In: Physical Review Letters 106 (2011), Article No.: 060502
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.106.060502
• Gabriel C., Wittmann C., Sych D., Dong R., Mauerer W., Andersen UL., Marquardt C., Leuchs G.:
  Quantum random numbers based on the vacuum state
  European Quantum Electronics Conference, EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: Optics InfoBase Conference Papers 2011
• Heim B., Peuntinger C., Wittmann C., Marquardt C., Leuchs G.:
  Free space quantum communication using continuous polarization variables
  Applications of Lasers for Sensing and Free Space Communications, LSC 2011 (CAN, 10. July 2011 - 14. July 2011)
  In: Optics InfoBase Conference Papers 2011
  DOI: 10.1364/lsc.2011.lwd3
• Holleczek A., Aiello A., Gabriel C., Marquardt C., Leuchs G.:
  Classical and quantum properties of cylindrically polarized beams of light via a poincaré sphere representation
  European Quantum Electronics Conference, EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: Optics InfoBase Conference Papers 2011
• Holleczek A., Aiello A., Gabriel C., Marquardt C., Leuchs G.:
  Classical and quantum properties of cylindrically polarized states of light
  In: Optics Express 19 (2011), p. 9714-9736
  ISSN: 1094-4087
  DOI: 10.1364/OE.19.009714
• Jain N., Lydersen L., Wittmann C., Wiechers C., Elser D., Marquardt C., Makarov V., Leuchs G.:
  Inducing a detector efficiency mismatch to hack a commercial quantum key distribution system
  2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 2011
  DOI: 10.1109/CLEOE.2011.5942990
• Jain N., Wittmann C., Lydersen L., Wiechers C., Elser DA., Marquardt C., Makarov V., Leuchs G.:
  Device Calibration Impacts Security of Quantum Key Distribution
  In: Physical Review Letters 107 (2011), Article No.: 110501
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.107.110501
• Korger J., Aiello A., Gabriel C., Banzer P., Kolb T., Marquardt C., Leuchs G.:
  Geometric Spin Hall Effect of Light at polarizing interfaces
  In: Applied Physics B-Lasers and Optics 102 (2011), p. 427-432
  ISSN: 0946-2171
  DOI: 10.1007/s00340-011-4400-z
• Korger J., Aiello A., Gabriel C., Banzer P., Kolb T., Marquardt C., Leuchs G.:
  Optical properties of a tilted polarizer and geometric spin hall effect of light
  European Quantum Electronics Conference, EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: Optics InfoBase Conference Papers 2011
• Leuchs G., Marquardt C.:
  Quantum effects in optical fibers
  Optical Fiber Communication Conference, OFC 2011 (USA, 6. March 2011 - 10. March 2011)
  In: Optics InfoBase Conference Papers 2011
• Lydersen L., Jain N., Wittmann C., Maroy O., Skaar J., Marquardt C., Makarov V., Leuchs G.:
  Superlinear threshold detectors in quantum cryptography
  In: Physical Review A - Atomic, Molecular, and Optical Physics 84 (2011), Article No.: 032320
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.84.032320
• Müller CR., Wittmann C., Marek P., Filip R., Usuga MA., Marquardt C., Andersen UL., Leuchs G.:
  Probabilistic amplification and cloning of phase-covariant coherent states
  European Quantum Electronics Conference, EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: Optics InfoBase Conference Papers 2011
• Sánchez-Soto LL., Klimov AB., Björk G., Söderholm J., Andersen UL., Marquardt C., Leuchs G.:
  Polarization correlations in quantum optics
  International Conference on Quantum Information, ICQI 2011 (CAN, 6. June 2011 - 8. June 2011)
  In: Optics InfoBase Conference Papers 2011
• Usuga MA., Mueller CR., Wittmann C., Marek P., Filip R., Marquardt C., Leuchs G., Andersen UL.:
  Concentrating the phase of a coherent state by means of probabilistic amplification
  10th International Conference on Quantum Communication, Measurement And Computing, QCMC 2010 (AUS, 19. July 2010 - 23. July 2010)
  In: AIP Conference Proceedings 2011
  DOI: 10.1063/1.3630185
• Wiechers C., Lydersen L., Wittmann C., Elser DA., Skaar J., Marquardt C., Makarov V., Leuchs G.:
  After-gate attack on a quantum cryptosystem
  In: New Journal of Physics 13 (2011), Article No.: 013043
  ISSN: 1367-2630
  DOI: 10.1088/1367-2630/13/1/013043
• Zhong W., Heim B., Elser D., Marquardt C., Leuchs G.:
  Polarization noise induced by photon-phonon interaction in hollow-core photonic crystal fibres
  2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 (DEU, 22. May 2011 - 26. May 2011)
  In: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 2011
  DOI: 10.1109/CLEOE.2011.5942793

2010

• Aiello A., Marquardt C., Leuchs G.:
  Transverse angular momentum of photons
  In: Physical Review A - Atomic, Molecular, and Optical Physics 81 (2010), Article No.: 053838
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.81.053838
• Bartley T., Heim B., Elser DA., Sych D., Sabuncu M., Wittmann C., Lindlein N., Marquardt C., Leuchs G.:
  Enhanced free space beam capture by improved optical tapers
  2010
  ISBN: 9783642117305
  DOI: 10.1007/978-3-642-11731-2_13
• Dong R., Lassen M., Heersink J., Marquardt C., Filip R., Leuchs G., Andersen UL.:
  Continuous-variable entanglement distillation of non-Gaussian mixed states
  In: Physical Review A - Atomic, Molecular, and Optical Physics 82 (2010), Article No.: 012312
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.82.012312
• Euser TG., Joly NY., Gabriel C., Marquardt C., Zang LY., Banzer P., Brenn A., Elser D., Förtsch M., Rammler S., Scharrer M., Leuchs G., Russell PSJ.:
  Nanobore PCF maintaining cylindrically polarized modes
  Conference on Lasers and Electro-Optics, CLEO 2010 (USA, 16. May 2010 - 21. May 2010)
  In: Optics InfoBase Conference Papers 2010
• Fuerst JU., Strekalov DV., Elser DA., Aiello A., Andersen UL., Marquardt C., Leuchs G.:
  Low-threshold optical parametric oscillations in a whispering gallery mode resonator
  In: Physical Review Letters 105 (2010), Article No.: 263904
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.105.263904
• Fuerst JU., Strekalov DV., Elser DA., Lassen M., Andersen UL., Marquardt C., Leuchs G.:
  Naturally phase-matched second-harmonic generation in a whispering-gallery-mode resonator
  In: Physical Review Letters 104 (2010), Article No.: 153901
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.104.153901
• Fürst J., Strekalov D., Elser DA., Lassen M., Andersen UL., Marquardt C., Leuchs G.:
  Naturally phase matched second harmonic generation in a whispering gallery mode resonator
  Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010 (USA, 16. May 2010 - 21. May 2010)
  In: Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010 2010
• Gabriel C., Wittmann C., Sych D., Dong R., Mauerer W., Andersen UL., Marquardt C., Leuchs G.:
  A generator for unique quantum random numbers based on vacuum states
  In: Nature Photonics 4 (2010), p. 711-715
  ISSN: 1749-4885
  DOI: 10.1038/nphoton.2010.197
• Heim B., Elser DA., Bartley T., Sabuncu M., Wittmann C., Sych D., Marquardt C., Leuchs G.:
  Atmospheric channel characteristics for quantum communication with continuous polarization variables
  In: Applied Physics B-Lasers and Optics 98 (2010), p. 635-640
  ISSN: 0946-2171
  DOI: 10.1007/s00340-009-3838-8
• Klimov AB., Bjoerk G., Soederholm J., Madsen LS., Lassen M., Andersen UL., Heersink J., Dong R., Marquardt C., Leuchs G., Sanchez-Soto LL.:
  Assessing the polarization of a quantum field from stokes fluctuations
  In: Physical Review Letters 105 (2010), Article No.: 153602
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.105.153602
• Usuga M., Müller C., Wittmann C., Marek P., Filip R., Marquardt C., Andersen UL., Leuchs G.:
  Concentration of phase-information
  Quantum Electronics and Laser Science Conference, QELS 2010 (USA, 16. May 2010 - 21. May 2010)
  In: Optics InfoBase Conference Papers 2010
• Usuga MA., Müller C., Wittmann C., Marek P., Filip R., Marquardt C., Leuchs G., Andersen UL.:
  Noise-powered probabilistic concentration of phase information
  In: Nature Physics 6 (2010), p. 767-771
  ISSN: 1745-2473
  DOI: 10.1038/nphys1743

2009

• Aiello A., Lindlein N., Marquardt C., Leuchs G.:
  Transverse Angular Momentum and Geometric Spin Hall Effect of Light
  In: Physical Review Letters 103 (2009), p. 100401
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.103.100401
• Aiello A., Marquardt C., Leuchs G.:
  Nonparaxial polarizers
  In: Optics Letters 34 (2009), p. 3160-3162
  ISSN: 0146-9592
  DOI: 10.1364/OL.34.003160
• Lassen MO., Dong R., Heersink J., Marquardt C., Filip R., Leuchs G., Ulrik LA.:
  Continuous variable entanglement distillation of non-gaussian states
  9th International Conference on Quantum Communication, Measurement And Computing, QCMC (CAN, 19. August 2009 - 24. August 2009)
  In: AIP Conference Proceedings 2009
  DOI: 10.1063/1.3131300
• Milanovic J., Lassen M., Förtsch M., Marquardt C., Andersen UL., Leuchs G.:
  Novel sources for polarisation squeezing and polarisation entanglement using photonic crystal fibres
  CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference (DEU, 14. June 2009 - 19. June 2009)
  In: CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference 2009
  DOI: 10.1109/CLEOE-EQEC.2009.5191598

2008

• Dong R., Lassen M., Heersink J., Marquardt C., Filip R., Leuchs G., Andersen LU.:
  Experimental entanglement distillation of mesoscopic quantum states
  In: Nature Physics 11 (2008), p. 919-923
  ISSN: 1745-2473
  DOI: 10.1038/nphys1112
• Dong R., Lassen MO., Marquardt C., Filip R., Andersen UL., Leuchs G.:
  Experimental Demonstration of Continuous Variable Entanglement Distillation
  Quantum Electronics and Laser Science Conference 2008 (San Jose, California, 4. May 2008 - 9. May 2008)
  URL: https://opg.optica.org/abstract.cfm?URI=QELS-2008-QWE4

2007

• Elser DA., Wittmann C., Andersen UL., Glöckl O., Lorenz S., Marquardt C., Leuchs G.:
  Guided acoustic wave Brillouin scattering in photonic crystal fibers
  PHONONS 2007 – 12TH INTERNATIONAL CONFERENCE ON PHONON SCATTERING IN CONDENSED MATTER (Paris, 15. July 2007 - 20. July 2007)
  In: Bernard Perrin (ed.): Journal of Physics: Conference Series 2007
  DOI: 10.1088/1742-6596/92/1/012108
  URL: https://iopscience.iop.org/article/10.1088/1742-6596/92/1/012108/meta
• Marquardt C.:
  Characterization and application of continuous variable quantum states of light (Dissertation, 2007)
  URL: https://opus4.kobv.de/opus4-fau/frontdoor/index/index/docId/555
• Marquardt C., Andersen UL., Leuchs G., Takeno Y., Yukawa M., Yonezawa H., Furusawa A.:
  Experimental demonstration of macroscopic quantum coherence in Gaussian states
  In: Physical Review A 76 (2007), p. 030101
  ISSN: 1050-2947
  DOI: 10.1103/PhysRevA.76.030101
• Marquardt C., Heersink J., Dong R., Chekova M., Klimov AB., Sanchez-Soto LL., Andersen UL., Leuchs G.:
  Quantum reconstruction of an intense polarization squeezed optical state
  In: Physical Review Letters 99 (2007), p. 220401
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.99.220401
• Milanovic J., Heersink J., Marquardt C., Huck A., Andersen UL., Leuchs G.:
  Polarization squeezing with photonic crystal fibers
  In: Laser Physics 17 (2007), p. 559-566
  ISSN: 1054-660X
• Zhong W., Marquardt C., Leuchs G., Andersen UL., Light P., Couny F., Benabid F.:
  Squeezing by self induced transparency in Rb filled hollow core fibers
  2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (München, 17. June 2007 - 22. June 2007)
  DOI: 10.1109/CLEOE-IQEC.2007.4386698

2006

• Elser DA., Andersen UL., Korn A., Glöckl O., Lorenz S., Marquardt C., Leuchs G.:
  Reduction of guided acoustic wave brillouin scattering in photonic crystal fibers
  In: Physical Review Letters 97 (2006), Article No.: 133901
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.97.133901
• Heersink J., Marquardt C., Dong R., Filip R., Lorenz S., Leuchs G., Andersen UL.:
  Distillation of Squeezing from Non-Gaussian Quantum States
  In: Physical Review Letters 96 (2006), p. 253601
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.96.253601
• Heersink J., Marquardt C., Filip R., Dong R., Chekhova MV., Lorenz S., Leuchs G., Andersen UL.:
  Experimental Distillation of Squeezed States
  QThL3 Quantum Electronics and Laser Science Conference (CLEO:FS) (Long Beach, California, 21. May 2006 - 26. May 2006)
  DOI: 10.1109/CLEO/QELS11250.2006
• Marquardt C., Heersink J., Chekhova MV., Klimov AB., Sánchez-Soto LL., Andersen UL., Leuchs G.:
  Quantum State Reconstruction of an Intense Polarization Squeezed State
  Quantum Electronics and Laser Science Conference 2006 (Long Beach, California, 21. May 2006 - 26. May 2006)
  DOI: 10.1109/CLEO.2006.4629050

2005

• Elser DA., Korn A., Lorenz S., Glöckl O., Marquardt C., Andersen UL., Leuchs G.:
  GAWBS noise reduction in microstructured fibers
  2005 European Quantum Electronics Conference, EQEC '05 (DEU, 12. June 2005 - 17. June 2005)
  In: 2005 European Quantum Electronics Conference, EQEC '05 2005
  DOI: 10.1109/EQEC.2005.1567494
• Leuchs G., Andersen UL., Glöckl O., Marquardt C., Heersink J., Lorenz S.:
  Generation and applications of quantum engineered optical soliton pulses
  2005 European Quantum Electronics Conference, EQEC '05 (DEU, 12. June 2005 - 17. June 2005)
  In: 2005 European Quantum Electronics Conference, EQEC '05 2005
  DOI: 10.1109/EQEC.2005.1567539
• Leuchs G., Korolkova N., Glöckl O., Lorenz S., Heersink J., Silberhorn C., Marquardt C., Andersen UL.:
  Quantum fiber solitons - generation, entanglement and detection
  In: Quantum Information Processing: Schwerpunktprogramm 1078 der Deutschen Forschungsgemeinschaft, Weinheim: Wiley-VCH Verlag GmbH & Co KGaA, 2005, p. 428-445
  ISBN: 9783527405411
  DOI: 10.1002/3527606009.ch32

2004

• Korn A., Glöckl O., Lorenz S., Marquardt C., Andersen UL., Leuchs G.:
  Phase noise suppression in Microstructured Fibers
  International Quantum Electronics Conference 2004 (San Francisco, California, 16. May 2004 - 21. May 2004)
  DOI: 10.1364/IQEC.2004.ITuI37
• Meißner M., Marquardt C., Heersink J., Gaber T., Wietfeld A., Leuchs G., Andersen UL.:
  All-fibre source of amplitude squeezed lightpulses
  In: Journal of Optics B Quantum and Semiclassical Optics 6 (2004), p. 652-657
  ISSN: 1464-4266
  DOI: 10.1088/1464-4266/6/8/005

2003

• Glöckl O., Lorenz S., Marquardt C., Heersink J., Brownnutt M., Silberhorn C., Pan Q., van Loock P., Korolkova N., Leuchs G.:
  Experiment towards continuous-variable entanglement swapping: Highly correlated four-partite quantum state
  In: Physical Review A - Atomic, Molecular, and Optical Physics 68 (2003), p. 012319
  ISSN: 1094-1622
  DOI: 10.1103/PhysRevA.68.012319
  URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.68.012319
• Glöckl O., Lorenz S., Marquardt C., Heersink J., Pan Q., van Loock P., Korolkova N., Leuchs G.:
  Interference of two intense entanglement sources: entanglement swapping and multi-partite entanglement
  2003 European Quantum Electronics Conference. EQEC 2003 (Munich, 22. June 2003 - 27. June 2003)
  DOI: 10.1109/EQEC.2003.1314258
  URL: https://ieeexplore.ieee.org/abstract/document/1314258
• Leuchs G., Glöckl O., Lorenz S., Marquardt C., Heersink J., Korolkova N.:
  Kerr-effect induced correlations of optical fiber solitons and the impact of phase control
  Frontiers in Optics 2003 (Tucson, AZ, 5. October 2003 - 8. October 2003)
  DOI: 10.1364/FIO.2003.WLL1
  URL: https://opg.optica.org/abstract.cfm?uri=FiO-2003-WLL1

2002

• Korolkova N., Silberhorn C., Glöckl O., Lorenz S., Marquardt C., Leuchs G.:
  Direct experimental test of non-separability and other quantum techniques using continuous variables of light
  In: European Physical Journal D 18 (2002), p. 229-235
  ISSN: 1434-6060
  DOI: 10.1140/epjd/e20020027
• Leuchs G., Silberhorn C., Glöckl O., Marquardt C., Korolkova N.:
  Fiber Solitons—Quantum Interferometry and Entanglement
  Quantum Electronics and Laser Science Conference 2002 (Long Beach, CA, 19. May 2002 - 22. May 2022)
  DOI: 10.1109/QELS.2002.1031386
  URL: https://opg.optica.org/abstract.cfm?uri=qels-2002-QFA1