Real-time selection for free-space measurement device independent quantum key distribution

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Zhuo-Dan Zhu ◽  
Dong Chen ◽  
Shang-Hong Zhao ◽  
Qin-Hui Zhang ◽  
Jun-Hua Xi
Keyword(s):  
Real Time ◽  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Measurement Device ◽  
Selection For ◽  
Space Measurement ◽  
Time Selection ◽  
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 Adaptive real time selection for quantum key distribution in lossy and turbulent free-space channels

2015 ◽  
Vol 91 (4) ◽  
Author(s):  
Giuseppe Vallone ◽  
Davide G. Marangon ◽  
Matteo Canale ◽  
Ilaria Savorgnan ◽  
Davide Bacco ◽  
...  
Keyword(s):  
Real Time ◽  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Selection For ◽  
Time Selection

scholarly journals Machine Learning-Assisted Measurement Device-Independent Quantum Key Distribution on Reference Frame Calibration

Entropy ◽  
2021 ◽  
Vol 23 (10) ◽  
pp. 1242
Author(s):  
Sihao Zhang ◽  
Jingyang Liu ◽  
Guigen Zeng ◽  
Chunhui Zhang ◽  
Xingyu Zhou ◽  
...  
Keyword(s):  
Machine Learning ◽  
Real Time ◽  
Reference Frame ◽  
Quantum Key Distribution ◽  
Short Term Memory ◽  
Key Distribution ◽  
Transmission Efficiency ◽  
System Stability ◽  
Measurement Device ◽  
Measurement Device Independent

In most of the realistic measurement device-independent quantum key distribution (MDI-QKD) systems, efficient, real-time feedback controls are required to maintain system stability when facing disturbance from either external environment or imperfect internal components. Traditionally, people either use a “scanning-and-transmitting” program or insert an extra device to make a phase reference frame calibration for a stable high-visibility interference, resulting in higher system complexity and lower transmission efficiency. In this work, we build a machine learning-assisted MDI-QKD system, where a machine learning model—the long short-term memory (LSTM) network—is for the first time to apply onto the MDI-QKD system for reference frame calibrations. In this machine learning-assisted MDI-QKD system, one can predict out the phase drift between the two users in advance, and actively perform real-time phase compensations, dramatically increasing the key transmission efficiency. Furthermore, we carry out corresponding experimental demonstration over 100 km and 250 km commercial standard single-mode fibers, verifying the effectiveness of the approach.

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.

Parameter optimization in satellite-based measurement-device-independent quantum key distribution

2021 ◽  
Author(s):  
Qin Dong ◽  
Guoqi Huang ◽  
Wei Cui ◽  
Rong-zhen Jiao
Keyword(s):  
Machine Learning ◽  
Real Time ◽  
Communication Networks ◽  
Parameter Optimization ◽  
Quantum Key Distribution ◽  
Search Algorithm ◽  
Key Distribution ◽  
Measurement Device ◽  
Data Set ◽  
Measurement Device Independent

Abstract The satellite-based measurement-device-independent quantum key distribution can promote the realization of quantum communication networks. Under the condition of the limited data set, it is necessary to optimize all parameters. For communication networks, real-time prediction and optimization are also indispensable. With the development of machine learning, cross-combination with machine learning has also become the mainstream of parameter optimization in various disciplines. This paper discusses the asymmetric MDI-QKD based on the satellite in the case of statistical fluctuations and uses the local search algorithm (LSA) to achieve full parameter optimization under the condition of considering the probability of sending the signal. Compared with fixed related parameters, the key rate is increased by an order of magnitude. On this basis, random forest is used to predict the high-precision optimal parameters, thereby eliminating the simulation and iteration required by the search method to meet the real-time optimization of the future QKD network.

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