An improved phase compensation noise model for the continuous-variable quantum key distribution with real local oscillators

2020 ◽  
Author(s):  
Biao Huang ◽  
Siyang Chen ◽  
Yongmei Huang ◽  
Zhenming Peng
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Noise Model ◽  
Phase Compensation ◽  
Local Oscillators

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 Adaptive Modulation for Continuous-Variable Quantum Key Distribution with Real Local Oscillators under Phase Attack

2021 ◽  
pp. 1-1
Author(s):  
Khaled Abdulaziz Alaghbari ◽  
Konstantin Evgenievich Rumyantsev ◽  
Tawfig Eltaif ◽  
Osama Elmabrok ◽  
Heng-Siong Lim
Keyword(s):  
Quantum Key Distribution ◽  
Adaptive Modulation ◽  
Key Distribution ◽  
Continuous Variable ◽  
Local Oscillators

scholarly journals Phase compensation for free-space continuous-variable quantum key distribution

2020 ◽  
Vol 28 (8) ◽  
pp. 10737 ◽  
Author(s):  
Shiyu Wang ◽  
Peng Huang ◽  
Miaomiao Liu ◽  
Tao Wang ◽  
Ping Wang ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Phase Compensation

scholarly journals Phase noise model for continuous-variable quantum key distribution using a local local oscillator

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Yun Shao ◽  
Heng Wang ◽  
Yaodi Pi ◽  
Wei Huang ◽  
Yang Li ◽  
...  
Keyword(s):  
Phase Noise ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Local Oscillator ◽  
Continuous Variable ◽  
Noise Model

scholarly journals Phase Compensation for Continuous Variable Quantum Key Distribution

2019 ◽  
Author(s):  
Hou-Man Chin ◽  
Darko Zibar ◽  
Nitin Jain ◽  
Tobias Gehring ◽  
Ulrik L. Andersen
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Phase Compensation

Phase compensation of continuous variable quantum key distribution based on mean denoising methods

2021 ◽  
Author(s):  
Fu Lifeng ◽  
Liu Jinlu ◽  
Zhang Chenlin ◽  
Zhang Tao ◽  
Shao Yun ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Continuous Variable ◽  
Phase Compensation
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