Bit error rates in a frequency coded quantum key distribution system

2009 ◽  
Vol 282 (18) ◽  
pp. 3827-3833 ◽  
Author(s):  
Pradeep Kumar ◽  
A. Prabhakar
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Error Rates ◽  
Bit Error Rates

scholarly journals Critical side channel effects in random bit generation with multiple semiconductor lasers in a polarization-based quantum key distribution system

2017 ◽  
Vol 25 (17) ◽  
pp. 20045 ◽  
Author(s):  
Heasin Ko ◽  
Byung-Seok Choi ◽  
Joong-Seon Choe ◽  
Kap-Joong Kim ◽  
Jong-Hoi Kim ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Side Channel ◽  
Channel Effects

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.

Dual-Threshold Balanced Homodyne Detection at 1550 nm Optical Fiber Quantum Key Distribution System

2009 ◽  
Vol 27 (15) ◽  
pp. 3202-3211 ◽  
Author(s):  
Q. Xu ◽  
M. Sabban ◽  
M.B. Costa e Silva ◽  
P. Gallion ◽  
F.J. Mendieta
Keyword(s):  
Optical Fiber ◽  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Homodyne Detection

scholarly journals Breaking a quantum key distribution system through a timing side channel

2007 ◽  
Vol 15 (15) ◽  
pp. 9388 ◽  
Author(s):  
Antía Lamas-Linares ◽  
Christian Kurtsiefer
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Side Channel
Sign in / Sign up

Export Citation Format

Share Document