High-rate and high-capacity measurement-device-independent quantum key distribution with Fibonacci matrix coding in free space

2018 ◽  
Vol 61 (6) ◽  
Author(s):  
Hong Lai ◽  
Mingxing Luo ◽  
Josef Pieprzyk ◽  
Jun Zhang ◽  
Lei Pan ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
High Capacity ◽  
Key Distribution ◽  
High Rate ◽  
Capacity Measurement ◽  
Measurement Device ◽  
Fibonacci Matrix ◽  
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 Free Space Measurement Device Independent Quantum Key Distribution with Modulating Retro-Reflectors under Correlated Turbulent Channel

Entropy ◽  
2021 ◽  
Vol 23 (10) ◽  
pp. 1299
Author(s):  
Xingyu Wang ◽  
Wei Liu ◽  
Tianyi Wu ◽  
Chang Guo ◽  
Yijun Zhang ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Channel Model ◽  
Key Distribution ◽  
Superior Performance ◽  
Double Pass ◽  
Plug And Play ◽  
Measurement Device ◽  
Moving Platforms ◽  
Measurement Device Independent

Modulating retro-reflector (MRR), originally introduced to support laser communication, relieves most of the weight, power, and pointing requirements to the ground station. In this paper, a plug-and-play measurement device independent quantum key distribution (MDI-QKD) scheme with MRR is proposed not only to eliminate detector side channels and allow an untrusted satellite relay between two users, but also to simplify the requirements set-ups in practical flexible moving scenarios. The plug-and-play architecture compensates for the polarization drift during the transmission to provide superior performance in implementing the MDI-QKD on a free-space channel, and the MRR device is adopted to relax the requirements on both communication terminals. A double-pass correlated turbulent channel model is presented to investigate the complex and unstable channel characteristics caused by the atmospheric turbulence. Furthermore, the security of the modified MDI-QKD scheme is analyzed under some classical attacks and the simulation results indicate the feasibility under the situation that the system performance deteriorates with the increase of fading correlation coefficient and the turbulence intensity, which provides a meaningful step towards an MDI-QKD based on the moving platforms to join a dynamic quantum network with untrusted relays.

Key rate estimation of measurement-device-independent quantum key distribution protocol in satellite-earth and intersatellite links

2018 ◽  
Vol 16 (03) ◽  
pp. 1850027 ◽  
Author(s):  
Ahmed Ismael Khaleel ◽  
Shelan Khasro Tawfeeq
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Detection System ◽  
Key Distribution ◽  
Earth Satellite ◽  
Measurement Device ◽  
Decoy State ◽  
Link Distance ◽  
State Case ◽  
Measurement Device Independent

In this work, an estimation of the key rate of measurement-device-independent quantum key distribution (MDI-QKD) protocol in free space was performed. The examined free space links included satellite-earth downlink, uplink and intersatellite link. Various attenuation effects were considered such as diffraction, atmosphere, turbulence and the efficiency of the detection system. Two cases were tested: asymptotic case with infinite number of decoy states and one-decoy state case. The estimated key rate showed the possibility of applying MDI-QKD in earth-satellite and intersatellite links, offering longer single link distance to be covered.

High-rate measurement device-independent quantum key distribution system

2019 ◽  
Vol 17 (05) ◽  
pp. 1950041
Author(s):  
Chenlin Xing ◽  
Peiyao Zhong ◽  
Rongzhen Jiao
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
High Rate ◽  
Measurement Device ◽  
Decoy State ◽  
The Relationship ◽  
Photon Source ◽  
Measurement Device Independent

Measurement device-independent quantum key distribution (MDI-QKD) system is significant for exploring the future communication system because of its outstanding performance in security. In this paper, the key rate of single-photon source and WCP source with common wavelength under ideal infinite-decoy case is analyzed in order to outline the relationship between the key rate and the optimization of light intensity. The performance of the key rate under the simplest situation of finite decoy-state (two decoy-state) is compared. The result may provide important parameters for the practical application of QKD system.

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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