TY - GEN
T1 - RF-assisted coherent detection based continuous variable (CV) QKD with high secure key rates over atmospheric turbulence channels
AU - Qu, Zhen
AU - Djordjevic, Ivan B
N1 - Publisher Copyright: © 2017 IEEE.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - In this invited paper, a high-speed continuous-variable quantum key distribution (CV-QKD) system is investigated in the presence of atmospheric turbulence, which is enabled by employing the wavelength, polarization, and orbital angular momentum (OAM) states as degrees of freedom. Four-state discrete modulation is used for the key shaping for the convenience of easy generation, as well as to enhance the reconciliation efficiency. The polarization insensitive atmospheric turbulence channel is emulated by two spatial light modulators (SLMs) on which randomly generated azimuthal phase patterns yielding Andrews' spectrum are recorded. The phase noise is mitigated by the phase noise cancellation (PNC) stage, and transmittance fluctuation is monitored directly by the D.C. component in the PNC stage. After system calibration, a total secret key rate (SKR) of 240 Mb/s can be reached in the presence of atmospheric turbulence.
AB - In this invited paper, a high-speed continuous-variable quantum key distribution (CV-QKD) system is investigated in the presence of atmospheric turbulence, which is enabled by employing the wavelength, polarization, and orbital angular momentum (OAM) states as degrees of freedom. Four-state discrete modulation is used for the key shaping for the convenience of easy generation, as well as to enhance the reconciliation efficiency. The polarization insensitive atmospheric turbulence channel is emulated by two spatial light modulators (SLMs) on which randomly generated azimuthal phase patterns yielding Andrews' spectrum are recorded. The phase noise is mitigated by the phase noise cancellation (PNC) stage, and transmittance fluctuation is monitored directly by the D.C. component in the PNC stage. After system calibration, a total secret key rate (SKR) of 240 Mb/s can be reached in the presence of atmospheric turbulence.
KW - atmospheric turbulence
KW - continuous-variable quantum key distribution (CV-QKD)
KW - discrete modulation
KW - phase noise cancellation (PNC)
KW - secret key rate (SKR)
UR - http://www.scopus.com/inward/record.url?scp=85030982458&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85030982458&partnerID=8YFLogxK
U2 - 10.1109/ICTON.2017.8024919
DO - 10.1109/ICTON.2017.8024919
M3 - Conference contribution
T3 - International Conference on Transparent Optical Networks
BT - ICTON 2017 - 19th International Conference on Transparent Optical Networks
PB - IEEE Computer Society
T2 - 19th International Conference on Transparent Optical Networks, ICTON 2017
Y2 - 2 July 2017 through 6 July 2017
ER -