Polarization Insensitive 100 MHz Clock Subcarrier Quantum Key Distribution over a 45 dB Loss Optical Fiber Channel

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Artur V. Gleim ◽  
Vladimir Egorov ◽  
Yuri V. Nazarov ◽  
Semen V. Smirnov ◽  
Vladimir V. Chistyakov ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Fiber Channel ◽  
Polarization Insensitive

scholarly journals Secure polarization-independent subcarrier quantum key distribution in optical fiber channel using BB84 protocol with a strong reference

2016 ◽  
Vol 24 (3) ◽  
pp. 2619 ◽  
Author(s):  
A. V. Gleim ◽  
V. I. Egorov ◽  
Yu. V. Nazarov ◽  
S. V. Smirnov ◽  
V. V. Chistyakov ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Bb84 Protocol ◽  
Fiber Channel ◽  
Polarization Independent

scholarly journals Key Distribution Scheme for Optical Fiber Channel Based on SNR Feature Measurement

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 208
Author(s):  
Xiangqing Wang ◽  
Jie Zhang ◽  
Bo Wang ◽  
Kongni Zhu ◽  
Haokun Song ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Networks ◽  
Signal To Noise Ratio ◽  
Key Distribution ◽  
Key Generation ◽  
Sensitive Data ◽  
Big Data Applications ◽  
Distribution Scheme ◽  
Fiber Channel ◽  
Physical Level

With the increase in the popularity of cloud computing and big data applications, the amount of sensitive data transmitted through optical networks has increased dramatically. Furthermore, optical transmission systems face various security risks at the physical level. We propose a novel key distribution scheme based on signal-to-noise ratio (SNR) measurements to extract the fingerprint of the fiber channel and improve the physical level of security. The SNR varies with time because the fiber channel is affected by many physical characteristics, such as dispersion, polarization, scattering, and amplifier noise. The extracted SNR of the optical fiber channel can be used as the basis of key generation. Alice and Bob can obtain channel characteristics by measuring the SNR of the optical fiber channel and generate the consistent key by quantization coding. The security and consistency of the key are guaranteed by the randomness and reciprocity of the channel. The simulation results show that the key generation rate (KGR) can reach 25 kbps, the key consistency rate (KCR) can reach 98% after key post-processing, and the error probability of Eve’s key is ~50%. In the proposed scheme, the equipment used is simple and compatible with existing optic fiber links.

scholarly journals Secure Quantum Key Distribution over 421 km of Optical Fiber

2018 ◽  
Vol 121 (19) ◽  
Author(s):  
Alberto Boaron ◽  
Gianluca Boso ◽  
Davide Rusca ◽  
Cédric Vulliez ◽  
Claire Autebert ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Quantum Key Distribution ◽  
Key Distribution

Dual-Threshold Balanced Homodyne Detection at 1550 nm Optical Fiber Quantum Key Distribution System

2009 ◽  
Vol 27 (15) ◽  
pp. 3202-3211 ◽  
Author(s):  
Q. Xu ◽  
M. Sabban ◽  
M.B. Costa e Silva ◽  
P. Gallion ◽  
F.J. Mendieta
Keyword(s):  
Optical Fiber ◽  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Homodyne Detection

Several Kinds of Polarization Compensation Techniques of Optical Fiber Quantum Key Distribution Systems

2014 ◽  
Vol 51 (9) ◽  
pp. 090603
Author(s):  
王剑 Wang Jian ◽  
朱勇 Zhu Yong ◽  
周华 Zhou Hua ◽  
苏洋 Su Yang ◽  
朱波 Zhu Bo
Keyword(s):  
Optical Fiber ◽  
Quantum Key Distribution ◽  
Distribution Systems ◽  
Key Distribution

Polarization-Insensitive Phase Modulation in Fiber Quantum Key Distribution System

2016 ◽  
Vol 53 (4) ◽  
pp. 040601
Author(s):  
李瑞雪 Li Ruixue ◽  
马海强 Ma Haiqiang ◽  
韦克金 Wei Kejin ◽  
朱武 Zhu Wu ◽  
刘宏伟 Liu Hongwei
Keyword(s):  
Distribution System ◽  
Phase Modulation ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Polarization Insensitive

scholarly journals The Influence of Signal Polarization on Quantum Bit Error Rate for Subcarrier Wave Quantum Key Distribution Protocol

Entropy ◽  
2020 ◽  
Vol 22 (12) ◽  
pp. 1393
Author(s):  
Andrei Gaidash ◽  
Anton Kozubov ◽  
Svetlana Medvedeva ◽  
George Miroshnichenko
Keyword(s):  
Optical Fiber ◽  
Bit Error Rate ◽  
Error Rate ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Stokes Parameters ◽  
Second Phase ◽  
Quantum Bit ◽  
Quantum Bit Error Rate ◽  
Quantum Key Distribution Protocol

In this paper, we consider the influence of a divergence of polarization of a quantum signal transmitted through an optical fiber channel on the quantum bit error rate of the subcarrier wave quantum key distribution protocol. Firstly, we investigate the dependence of the optical power of the signal on the modulation indices’ difference after the second phase modulation of the signal. Then we consider the Liouville equation with regard to relaxation in order to develop expressions of the dynamics of the Stokes parameters. As a result, we propose a model that describes quantum bit error rate for the subcarrier wave quantum key distribution depending on the characteristics of the optical fiber. Finally, we propose several methods for minimizing quantum bit error rate.

scholarly journals Measurement-Device-Independent Quantum Key Distribution Over a 404 km Optical Fiber

2016 ◽  
Vol 117 (19) ◽  
Author(s):  
Hua-Lei Yin ◽  
Teng-Yun Chen ◽  
Zong-Wen Yu ◽  
Hui Liu ◽  
Li-Xing You ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Measurement Device ◽  
Measurement Device Independent
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