An Optimized, Authenticated Key Distribution Protocol for Optical Channels

2013 ◽  
pp. 101-114
Author(s):  
Sara Abozied ◽  
Hassan Elkamchouchi ◽  
Yasmine Abouelseoud ◽  
Refaat El-Attar
Keyword(s):  
Key Distribution ◽  
Optical Channels

scholarly journals Toward Photon-Efficient Key Distribution Over Optical Channels

2014 ◽  
Vol 60 (8) ◽  
pp. 4958-4972 ◽  
Author(s):  
Yuval Kochman ◽  
Ligong Wang ◽  
Gregory W. Wornell
Keyword(s):  
Key Distribution ◽  
Optical Channels

scholarly journals Network Coding Aided Cooperative Quantum Key Distribution Over Free-Space Optical Channels

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 12301-12317 ◽  
Author(s):  
Hung Viet Nguyen ◽  
Phuc V. Trinh ◽  
Anh T. Pham ◽  
Zunaira Babar ◽  
Dimitrios Alanis ◽  
...  
Keyword(s):  
Network Coding ◽  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Free Space Optical ◽  
Optical Channels

scholarly journals Proof-of-principle experimental demonstration of twin-field quantum key distribution over optical channels with asymmetric losses

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Xiaoqing Zhong ◽  
Wenyuan Wang ◽  
Li Qian ◽  
Hoi-Kwong Lo
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Experimental Demonstration ◽  
Asymmetric Channel ◽  
Long Distance ◽  
Optical Channels ◽  
Fundamental Limit ◽  
Point To Point ◽  
Signal Intensities ◽  
Proof Of Principle

AbstractTwin-field (TF) quantum key distribution (QKD) is highly attractive because it can beat the fundamental limit of secret key rate for point-to-point QKD without quantum repeaters. Many theoretical and experimental studies have shown the superiority of TFQKD in long-distance communication. All previous experimental implementations of TFQKD have been done over optical channels with symmetric losses. But in reality, especially in a network setting, the distances between users and the middle node could be very different. In this paper, we perform a proof-of-principle experimental demonstration of TFQKD over optical channels with asymmetric losses. We compare two compensation strategies, that are (1) applying asymmetric signal intensities and (2) adding extra losses, and verify that strategy (1) provides much better key rate. Moreover, the higher the loss, the more key rate enhancement it can achieve. By applying asymmetric signal intensities, TFQKD with asymmetric channel losses not only surpasses the fundamental limit of key rate of point-to-point QKD for 50 dB overall loss, but also has key rate as high as 2.918 × 10−6 for 56 dB overall loss. Whereas no keys are obtained with strategy (2) for 56 dB loss. The increased key rate and enlarged distance coverage of TFQKD with asymmetric channel losses guarantee its superiority in long-distance quantum networks.

Twin-field quantum key distribution over free-space optical channels in the presence of atmospheric turbulence

2022 ◽  
Author(s):  
Yuqing Huang ◽  
Zhongqi Sun ◽  
Tianqi Dou ◽  
Jipeng Wang ◽  
Zhenhua Li ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Communication Networks ◽  
Free Space ◽  
Quantum Key Distribution ◽  
Quantum Communication ◽  
Channel Model ◽  
Key Distribution ◽  
Global Scale ◽  
Free Space Optical ◽  
Optical Channels

Future quantum communication networks envisaged on a global scale will include various networks interlinked via optical fiber and free space channels. In recent years, quantum key distribution (QKD) protocol based on optical fiber has been extensively studied. Twin-field QKD (TF-QKD) may enable 550 km QKD using standard optical fiber without quantum repeaters. However, the performance of TF-QKD in free-space channel is still unclear. In this paper, a free-space channel model is proposed with specific turbulence characterization discussed. Here, the key rate of TF-QKD under multiple scenarios considering the variation of turbulence and different link configuration is investigated. Simulation results demonstrate that the performance of free-space TF-QKD is related to link configuration and turbulence motion which is determined by surface feature, time and height. Furthermore, TF-QKD protocol is a potential scheme for the free-space quantum communication.

Correction to “Toward Photon-Efficient Key Distribution over Optical Channels” [Aug 14 4958-4972]

2014 ◽  
Vol 60 (9) ◽  
pp. 5805-5805
Author(s):  
Yuval Kochman ◽  
Ligong Wang ◽  
Gregory W. Wornell
Keyword(s):  
Key Distribution ◽  
Optical Channels

The Statistical Evaluations of Transmission Characteristics, Limits of Ranges and Speeds of Transmission of Information Via the Pulsed Atmospheric Bistatic Optical Channels

2019 ◽  
pp. 97-104
Author(s):  
Mikhail V. Tarasenkov ◽  
Egor S. Poznakharev ◽  
Vladimir V. Belov
Keyword(s):  
Communication Systems ◽  
Estimation Algorithm ◽  
Transmission Characteristics ◽  
Radiation Beam ◽  
Optical Channels ◽  
The Monte Carlo Method ◽  
Wide Range ◽  
Transmission Of Information ◽  
Optical Axes ◽  
Visibility Range

The simulation program by the Monte Carlo method of pulse reactions of bistatic atmospheric aerosol-gas channels of optical-electronic communication systems (OECS) is created on the basis of the modified double local estimation algorithm. It is used in a series of numerical experiments in order to evaluate statistically the transfer characteristics of these channels depending on the optical characteristics of an atmosphere plane-parallel model for wavelengths λ = 0.3, 0.5, and 0.9 μm at a meteorological visibility range SM = 10 and 50 km. The results are obtained for a set of basic distances between the light source and the light receiver up to 50 km and for the angular orientations of the optical axes of a laser radiation beam and of the receiving system in a wide range of their values. The dependences of the pulse reactions maximum values over-the-horizon channels of the OECS on the variations of these parameters are established.

Stronger Chikazawa-Yamagishi ID-Based Key Distribution

2009 ◽  
Vol E92-A (5) ◽  
pp. 1379-1382 ◽  
Author(s):  
Ik Rae JEONG ◽  
Jeong Ok KWON ◽  
Dong Hoon LEE
Keyword(s):  
Key Distribution
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