Simultaneous classical communication and quantum key distribution using continuous variables

Qi, Bing

doi:10.1103/PhysRevA.94.042340

Title: Simultaneous classical communication and quantum key distribution using continuous variables

Journal Article · Wed Oct 26 00:00:00 EDT 2016 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.94.042340· OSTI ID:1330538

Qi, Bing ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Univ. of Tennessee, Knoxville, TN (United States)

Currently, classical optical communication systems employing strong laser pulses and quantum key distribution (QKD) systems working at single-photon levels are very different communication modalities. Dedicated devices are commonly required to implement QKD. In this paper, we propose a scheme which allows classical communication and QKD to be implemented simultaneously using the same communication infrastructure. More specially, we propose a coherent communication scheme where both the bits for classical communication and the Gaussian distributed random numbers for QKD are encoded on the same weak coherent pulse and decoded by the same coherent receiver. Simulation results based on practical system parameters show that both deterministic classical communication with a bit error rate of 10^–9 and secure key distribution could be achieved over tens of kilometers of single-mode fibers. It is conceivable that in the future coherent optical communication network, QKD will be operated in the background of classical communication at a minimal cost.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1330538

Alternate ID(s):: OSTI ID: 1330122

Journal Information:: Physical Review A, Vol. 94, Issue 4; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 24 works

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Security bound of continuous-variable measurement-device-independent quantum key distribution with imperfect phase reference calibration Ma, Hong-Xin; Huang, Peng; Wang, Tao Physical Review A, Vol. 100, Issue 5 https://doi.org/10.1103/physreva.100.052330	journal	November 2019
Simultaneous two-way classical communication and measurement-device-independent quantum key distribution with coherent states Pan, Dong; Ng, Soon Xin; Ruan, Dong Physical Review A, Vol. 101, Issue 1 https://doi.org/10.1103/physreva.101.012343	journal	January 2020
Carrier-phase estimation for simultaneous quantum key distribution and classical communication using a real local oscillator Wang, Tao; Huang, Peng; Wang, Shiyu Physical Review A, Vol. 99, Issue 2 https://doi.org/10.1103/physreva.99.022318	journal	February 2019
Simultaneous Classical Communication and Quantum Key Distribution Based on Plug-and-Play Configuration with an Optical Amplifier Wu, Xiaodong; Wang, Yijun; Liao, Qin Entropy, Vol. 21, Issue 4 https://doi.org/10.3390/e21040333	journal	March 2019
Experimental demonstration of single-shot quantum and classical signal transmission on single wavelength optical pulse Kumar, Rupesh; Wonfor, Adrian; Penty, Richard Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.42109	text	January 2019
Experimental demonstration of single-shot quantum and classical signal transmission on single wavelength optical pulse Kumar, Rupesh; Wonfor, Adrian; Penty, Richard Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.55723	text	January 2019
Self-coherent phase reference sharing for continuous-variable quantum key distribution Marie, Adrien; Alléaume, Romain arXiv https://doi.org/10.48550/arxiv.1605.03642	text	January 2016
Security bound of continuous-variable measurement-device-independent quantum key distribution with imperfect phase reference calibration Ma, Hong-Xin; Huang, Peng; Wang, Tao arXiv https://doi.org/10.48550/arxiv.1904.09786	text	January 2019

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