scholarly journals Entangled quantum key distribution over two free-space optical links

2008 ◽  
Vol 16 (21) ◽  
pp. 16840 ◽  
Author(s):  
C. Erven ◽  
C. Couteau ◽  
R. Laflamme ◽  
G. Weihs
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Free Space Optical ◽  
Optical Links

scholarly journals Free-Space-Optical Quantum Key Distribution Systems: Challenges and Trends

2019 ◽  
Author(s):  
Josue Aaron Lopez-Leyva ◽  
Ariana Talamantes-Alvarez ◽  
Miguel A. Ponce-Camacho ◽  
Edith Garcia-Cardenas ◽  
Eduardo Alvarez-Guzman
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Distribution Systems ◽  
Key Distribution ◽  
Free Space Optical

scholarly journals Design and Performance of Relay-Assisted Satellite Free-Space Optical Quantum Key Distribution Systems

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 122498-122510
Author(s):  
Minh Quang Vu ◽  
Thanh V. Pham ◽  
Ngoc T. Dang ◽  
Anh T. Pham
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Distribution Systems ◽  
Key Distribution ◽  
Free Space Optical ◽  
And Performance

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 Analysis of phase noise effects in a coupled Mach–Zehnder interferometer for a much stabilized free-space optical link

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Byoung S. Ham
Keyword(s):  
Phase Noise ◽  
Free Space ◽  
Key Distribution ◽  
Unconditional Security ◽  
Zehnder Interferometer ◽  
Free Space Optical ◽  
Optical Link ◽  
Optical Links ◽  
Potential Applications ◽  
Mach Zehnder Interferometer

AbstractRecently, new physics for unconditional security in a classical key distribution (USCKD) has been proposed and demonstrated in a frame of a double Mach–Zehnder interferometer (MZI) as a proof of principle, where the unconditional security is rooted in MZI channel superposition. Due to environmental phase noise caused by temperature variations, atmospheric turbulences, and mechanical vibrations, free-space optical links have been severely challenged for both classical and quantum communications. Here, the double MZI scheme of USCKD is analyzed for greatly subdued environment-caused phase noise via double unitary transformation, resulting in potential applications of free-space optical links, where the free-space optical link has been a major research area from fundamental physics of atomic clock and quantum key distribution to potential applications of geodesy, navigation, and MIMO technologies in mobile communications systems.

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.

Combining quantum key distribution with chaotic systems for free-space optical communications

2021 ◽  
Vol 20 (11) ◽  
Author(s):  
Naveed Mahmud ◽  
Andrew MacGillivray ◽  
Apurva Rai ◽  
Jenna Patterson ◽  
Adam Gharaibeh ◽  
...  
Keyword(s):  
Optical Communications ◽  
Free Space ◽  
Quantum Key Distribution ◽  
Chaotic Systems ◽  
Key Distribution ◽  
Free Space Optical
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