scholarly journals Long distance measurement device independent quantum key distribution with quantum memories

2015 ◽  
Vol 64 (14) ◽  
pp. 140304
Author(s):  
Sun Ying ◽  
Zhao Shang-Hong ◽  
Dong Chen
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Distance Measurement ◽  
Long Distance ◽  
Measurement Device ◽  
Measurement Device Independent

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

scholarly journals Long-distance continuous-variable measurement-device-independent quantum key distribution with postselection

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Kieran N. Wilkinson ◽  
Panagiotis Papanastasiou ◽  
Carlo Ottaviani ◽  
Tobias Gehring ◽  
Stefano Pirandola
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Long Distance ◽  
Measurement Device ◽  
Variable Measurement ◽  
Measurement Device Independent

scholarly journals The Performance of Satellite-Based Links for Measurement-Device-Independent Quantum Key Distribution

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 1010
Author(s):  
Guoqi Huang ◽  
Qin Dong ◽  
Wei Cui ◽  
Rongzhen Jiao
Keyword(s):  
Communication Network ◽  
Optical Fiber ◽  
Quantum Key Distribution ◽  
Large Scale ◽  
Quantum Communication ◽  
Weather Conditions ◽  
Key Distribution ◽  
Long Distance ◽  
Measurement Device ◽  
Measurement Device Independent

Measurement-device-independent quantum key distribution (MDI-QKD) protocol has high practical value. Satellite-based links are useful to build long-distance quantum communication network. The model of satellite-based links for MDI-QKD was proposed but it lacks practicality. This work further analyzes the performance of it. First, MDI-QKD and satellite-based links model are introduced. Then considering the operation of the satellite the performance of their combination is studied under different weather conditions. The results may provide important references for combination of optical-fiber-based links on the ground and satellite-based links in space, which is helpful for large-scale quantum communication network.

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.

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