scholarly journals Analysis on performance optimization in measurement-device-independent quantum key distribution using weak coherent states

2016 ◽  
Vol 65 (10) ◽  
pp. 100302
Author(s):  
Wu Cheng-Feng ◽  
Du Ya-Nan ◽  
Wang Jin-Dong ◽  
Wei Zheng-Jun ◽  
Qin Xiao-Juan ◽  
...  
Keyword(s):  
Performance Optimization ◽  
Quantum Key Distribution ◽  
Coherent States ◽  
Key Distribution ◽  
Measurement Device ◽  
Measurement Device Independent

Passive Measurement-Device-Independent Quantum Key Distribution Based on Heralded Pair Coherent States

2020 ◽  
Vol 47 (9) ◽  
pp. 0912002
Author(s):  
何业锋 He Yefeng ◽  
李春雨 Li Chunyu ◽  
郭佳瑞 Guo Jiarui ◽  
赵艳坤 Zhao Yankun
Keyword(s):  
Quantum Key Distribution ◽  
Coherent States ◽  
Key Distribution ◽  
Measurement Device ◽  
Passive Measurement ◽  
Measurement Device Independent

scholarly journals Measurement-device-independent quantum key distribution with leaky sources

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Weilong Wang ◽  
Kiyoshi Tamaki ◽  
Marcos Curty
Keyword(s):  
Quantum Key Distribution ◽  
Communication Systems ◽  
Signal Transmission ◽  
Information Leakage ◽  
Key Distribution ◽  
Time Frame ◽  
Measurement Device ◽  
Decoy State ◽  
Unrealistic Assumption ◽  
Measurement Device Independent

AbstractMeasurement-device-independent quantum key distribution (MDI-QKD) can remove all detection side-channels from quantum communication systems. The security proofs require, however, that certain assumptions on the sources are satisfied. This includes, for instance, the requirement that there is no information leakage from the transmitters of the senders, which unfortunately is very difficult to guarantee in practice. In this paper we relax this unrealistic assumption by presenting a general formalism to prove the security of MDI-QKD with leaky sources. With this formalism, we analyze the finite-key security of two prominent MDI-QKD schemes—a symmetric three-intensity decoy-state MDI-QKD protocol and a four-intensity decoy-state MDI-QKD protocol—and determine their robustness against information leakage from both the intensity modulator and the phase modulator of the transmitters. Our work shows that MDI-QKD is feasible within a reasonable time frame of signal transmission given that the sources are sufficiently isolated. Thus, it provides an essential reference for experimentalists to ensure the security of implementations of MDI-QKD in the presence of information leakage.

scholarly journals Long-Distance Free-Space Measurement-Device-Independent Quantum Key Distribution

2020 ◽  
Vol 125 (26) ◽  
Author(s):  
Yuan Cao ◽  
Yu-Huai Li ◽  
Kui-Xing Yang ◽  
Yang-Fan Jiang ◽  
Shuang-Lin Li ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Long Distance ◽  
Measurement Device ◽  
Space Measurement ◽  
Measurement Device Independent
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