학술논문
Improving Continuous Variable Quantum Key Distribution Using Heralded Hybrid Linear amplifier and Heralded Noiseless Linear amplifier When source in the Middle
Document Type
Conference
Author
Source
2022 International Conference on Computing, Communication, Perception and Quantum Technology (CCPQT) CCPQT Computing, Communication, Perception and Quantum Technology (CCPQT), 2022 International Conference on. :188-192 Aug, 2022
Subject
Language
Abstract
We propose a protocol to improve the transmission distance and secure key rate of quantum channels, the NLA-HLA QKD. The untrusted entanglement is sent to users by a quantum channel. It is capable of long transmission distances while maintaining high secure key rates and resisting the higher noise. Using the method of calculating secure key rate with the coherent state, the secure key of the NLA-HLA QKD protocol is derived. The effects of the parameters G and g on the key rate are analyzed through simulation experiments. By regulating the values of G and g, the application range of the protocol can be improved. Optimal parameters are used under specific circumstances to ensure the validity of the protocol.