Research Assistent

• Rückmann, M. ; Kleis, S. ; Schaeffer, C.G. ; Zibar, D.

Machine Learning in Quantum Communication

OSA Advanced Photonics Congres 2020 / SPPCom 2020, Virtual Web Conference / SpTu3I.6, 14. July 2020

• Rückmann, M. ; Kleis, S. ; Schaeffer, C.

17 GBd Sub-Photon Level Heterodyne Detection for CV–QKD Enabled by Machine Learning

Optical Fiber Conference (OFC),  Poster Session II / Th2A.54, San Diego, USA, 8.-12. March 2020

• Zibar, D. ; Moura, U. C. ; Chin, H. M. ; Rosa Brusin, A. M. ; Jain, N. ; Da Ros, F. ; Kleis, S. ; Schaeffer, C. ; Gehring, T. ; Andersen, U. L. ; Carena, A.

Advancing classical and quantum communication systems with machine learning    (invited)

Optical Fiber Conference (OFC),  San Diego, USA, 8.-12. March 2020

• Schäffer, C.G. ; Kleis, S. ; Rückmann, M. ; Zibar, D.

Heterodyne Receivers for Quantum Communication

Asia Communications and Photonics Conference (ACP) 2019, paper Th4H.1, InterContinental Chengdu Global Center, Chengdu, China, 2.-5.11.2019

DOI     https://www.osapublishing.org/abstract.cfm?URI=ACPC-2019-T4H.1

• Kleis, S. ; Steinmayer, J. ; Derksen, R. ; Schäffer, C.G.

Experimental Investigation of Heterodyne Quantum Key Distribution in the S-Band or L-Band Embedded in a Commercial C-Band DWDM System

Optics Express , Vol. 27, Issue 12, pp. 16540-16549 (29. May 2019)

DOI     https://doi.org/10.1364/OE.27.016540

• Kleis, S. ; Steinmayer, J. ; Derksen, R. ; Schäffer, C.G.

Experimental Investigation of Heterodyne Quantum Key Distribution in the S-Band Embedded in a Commercial DWDM System

Optical Fiber Conference, paper Th1J.3, San Diego, USA, 3.-7. März 2019

DOI     https://doi.org/10.1364/OFC.2019.Th1J.3

• Kleis, S. ; Schäffer, C.G.

Improving the Secret Key Rate of Coherent Quantum Key Distribution with Bayesian Inference

Journal of Lightwave Technology, 25. October 2018

DOI     https://ieeexplore.ieee.org/document/8509112

• Rueckmann, M. ; Kleis, S. ; Schaeffer, C.G.

1 GBaud Continuous Variable Quantum Key Distribution Using Pilot Tone Assisted Heterodyne Detection

19. ITG Fachtagung Photonische Netze, Leipzig, 11.-12. June 2018

DOI     https://ieeexplore.ieee.org/document/8436123/

• Kleis, S. ; Schaeffer, C.G.

Improving the Performance of Coherent Quantum Communications with Bayesian Inference

Optical Fiber Conference (OFC), 2018, San Diego, USA, 11.-15. March 2018

DOI     https://ieeexplore.ieee.org/document/8386117/

• Kleis, S. ; Schäffer, C. G.

Influence of the SNR of Pilot Tones on the Carrier Phase Estimation in Coherent Quantum Receivers

43rd European Conference on Optical Communication ECOC 2017; Proceedings of, 17. – 21. September 2017

DOI     https://ieeexplore.ieee.org/document/8345980/

• Kleis, S. ; Rückmann, M. ; Schäffer, C. G.

Continuous variable quantum key distribution with a real local oscillator using simultaneous pilot signals

Optics Letters, vol. 42, no. 8, p. 1588, Apr. 2017

DOI      http://doi.org/10.1364/OL.42.001588

• Kleis, S. ; Schäffer, C. G.

Signal Processing Methods for Quantum Receivers

Advanced Photonics 2017 (IPR, NOMA, Sensors, Networks, SPPCom, PS), p. SpTu1F.1, 2017

DOI     https://doi.org/10.1364/SPPCOM.2017.SpTu1F.1

• Kleis, S. ; Schäffer, C. G.

Comparison of frequency estimation methods for heterodyne quantum communications

Photonic Networks; 18. ITG-Symposium; Proceedings of, pp. 57–59, 2017

DOI     http://ieeexplore.ieee.org/document/7988083/

• Schaeffer, C. G. ; Kleis, S.

Design of Coherent Receivers for Quantum Communication

Asia Communications and Photonics Conference, Nov. 2-5, 2016, Wuhan, China

DOI     https://doi.org/10.1364/ACPC.2016.ATh3D.3

• Kleis, S. ; Schäffer, C. G.

Heterodyne Coherent Scheme for Long Distance Quantum Key Distribution Using a Real Local Oscillator

42nd European Conference on Optical Communication (ECOC 2016) , paper Th.2.6.1, Düsseldorf, 19. – 23. September 2016

DOI     http://ieeexplore.ieee.org/document/7767599/

• Kleis, S. ; Schäffer, C. G.

Coexistence of PSK  quantum key distribution and WDM  channels in optical transmission

17. ITG Fachtagung Photonische Netze, Leipzig, 5.-6. May 2016

DOI     http://ieeexplore.ieee.org/document/7499092/

• Kleis, S. ; Rückmann, M. ; Schäffer, C. G.

Secure Key-Generation using Optical Coherent technology

DWT, Hamburg, 13.10. 2015

• Kleis, S. ; Herschel, R. ; Schäffer, C. G.

Simple and Efficient Detection Scheme for Continuous Variable Quantum Key Distribution with m-ary  Phase-Shift-Keying

CLEO, San Jose, June 2015

DOI     http://dx.doi.org/10.1364/CLEO_SI.2015.SW3M.7

• Kleis, S. ; Schäffer, C. G.

Optical Coherent Scheme with m-PSKModulation for Secure Key Distributionen

16. ITG Fachtagung Photonische Netze, Leipzig, 7.-9. May 2015

DOI    http://ieeexplore.ieee.org/document/7110092/

• Kleis,S. ; Herschel, R. ; Schäffer, C. G.

Coherent receiver architectures for secure key distribution using faint optical multilevel signals

Laser, Photonics, Biomedical Optics Conference (SPIE Photonics West), San Francisco, California, USA, 7.-12. February 2015

DOI     https://doi.org/10.1117/12.2079649

• Kleis, S. ; Schäffer, C. G.

Architectures of coherent receivers for optical quantum communications

Photonics and wireless communications seminar, 19 May 2014, DTU  Fotonik

• Kleis, S. ; Schäffer, C. G.

Architekturen von kohärenten Empfängern für die optische Quantenkommunikation

15. ITG Fachtagung Photonische Netze, Leipzig, 5.- 6. May 2014

DOI     http://ieeexplore.ieee.org/document/6839987/