Simultaneous classical communication and quantum key distribution using continuous variables
Abstract
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.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1330538
- Alternate Identifier(s):
- OSTI ID: 1330122
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review A
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 4; Journal ID: ISSN 2469-9926
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Qi, Bing. Simultaneous classical communication and quantum key distribution using continuous variables. United States: N. p., 2016.
Web. doi:10.1103/PhysRevA.94.042340.
Qi, Bing. Simultaneous classical communication and quantum key distribution using continuous variables. United States. https://doi.org/10.1103/PhysRevA.94.042340
Qi, Bing. Wed .
"Simultaneous classical communication and quantum key distribution using continuous variables". United States. https://doi.org/10.1103/PhysRevA.94.042340. https://www.osti.gov/servlets/purl/1330538.
@article{osti_1330538,
title = {Simultaneous classical communication and quantum key distribution using continuous variables},
author = {Qi, Bing},
abstractNote = {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.},
doi = {10.1103/PhysRevA.94.042340},
journal = {Physical Review A},
number = 4,
volume = 94,
place = {United States},
year = {Wed Oct 26 00:00:00 EDT 2016},
month = {Wed Oct 26 00:00:00 EDT 2016}
}
Web of Science
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