High Speed Information Reconciliation for Long Distance Continuous-variable Quantum Key Distribution System

2017 ◽  
Author(s):  
Xiangyu Wang ◽  
Yichen Zhang ◽  
Song Yu ◽  
Hong Guo
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution ◽  
Continuous Variable ◽  
Long Distance ◽  
Information Reconciliation

Study of Synchronous Technology in High-Speed Continuous Variable Quantum Key Distribution System

2015 ◽  
Vol 35 (1) ◽  
pp. 0106006 ◽  
Author(s):  
刘友明 Liu Youming ◽  
汪超 Wang Chao ◽  
黄端 Huang Duan ◽  
黄鹏 Huang Peng ◽  
冯晓毅 Feng Xiaoyi ◽  
...  
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution ◽  
Continuous Variable ◽  
Synchronous Technology

scholarly journals Demonstration of high-speed and low-complexity continuous variable quantum key distribution system with local local oscillator

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shengjun Ren ◽  
Shuai Yang ◽  
Adrian Wonfor ◽  
Ian White ◽  
Richard Penty
Keyword(s):  
Distribution System ◽  
Repetition Rate ◽  
Quantum Key Distribution ◽  
Optimization Technique ◽  
Key Distribution ◽  
Local Oscillator ◽  
Continuous Variable ◽  
Noise Model ◽  
System Level ◽  
Excess Noise

AbstractWe present an experimental demonstration of the feasibility of the first 20 + Mb/s Gaussian modulated coherent state continuous variable quantum key distribution system with a locally generated local oscillator at the receiver (LLO-CVQKD). To increase the signal repetition rate, and hence the potential secure key rate, we equip our system with high-performance, wideband devices and design the components to support high repetition rate operation. We have successfully trialed the signal repetition rate as high as 500 MHz. To reduce the system complexity and correct for any phase shift during transmission, reference pulses are interleaved with quantum signals at Alice. Customized monitoring software has been developed, allowing all parameters to be controlled in real-time without any physical setup modification. We introduce a system-level noise model analysis at high bandwidth and propose a new ‘combined-optimization’ technique to optimize system parameters simultaneously to high precision. We use the measured excess noise, to predict that the system is capable of realizing a record 26.9 Mb/s key generation in the asymptotic regime over a 15 km signal mode fibre. We further demonstrate the potential for an even faster implementation.

scholarly journals Long-Distance Continuous-Variable Quantum Key Distribution over 202.81 km of Fiber

2020 ◽  
Vol 125 (1) ◽  
Author(s):  
Yichen Zhang ◽  
Ziyang Chen ◽  
Stefano Pirandola ◽  
Xiangyu Wang ◽  
Chao Zhou ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Long Distance

scholarly journals Long-Distance Continuous-Variable Quantum Key Distribution With Quantum Scissors

2020 ◽  
Vol 26 (3) ◽  
pp. 1-12 ◽  
Author(s):  
Masoud Ghalaii ◽  
Carlo Ottaviani ◽  
Rupesh Kumar ◽  
Stefano Pirandola ◽  
Mohsen Razavi
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Long Distance

Comprehensive high-speed reconciliation for continuous-variable quantum key distribution

2020 ◽  
Vol 19 (9) ◽  
Author(s):  
Dabo Guo ◽  
Chao He ◽  
Tianhao Guo ◽  
Zhe Xue ◽  
Qiang Feng ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution ◽  
Continuous Variable

scholarly journals Long-distance continuous-variable quantum key distribution with a Gaussian modulation

2011 ◽  
Vol 84 (6) ◽  
Author(s):  
Paul Jouguet ◽  
Sébastien Kunz-Jacques ◽  
Anthony Leverrier
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Long Distance
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