Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator

An improved continuous variable quantum key distribution (CVQKD) approach based on a heralded hybrid linear amplifier (HLA) is proposed in this study, which includes an ideal deterministic linear amplifier and a probabilistic noiseless linear amplifier. The CVQKD, which is based on an amplifier, enh...

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Autores principales:	Yin Li, Yijun Wang, Yun Mao, Weishao Peng, Di Jin, Ying Guo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	continuous-variable quantum key distribution optical amplifier local local oscillator Science Q Astrophysics QB460-466 Physics QC1-999
Acceso en línea:	https://doaj.org/article/69310f7629754a5bbe633305875b405d
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spelling	oai:doaj.org-article:69310f7629754a5bbe633305875b405d2021-11-25T17:29:16ZContinuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator10.3390/e231113951099-4300https://doaj.org/article/69310f7629754a5bbe633305875b405d2021-10-01T00:00:00Zhttps://www.mdpi.com/1099-4300/23/11/1395https://doaj.org/toc/1099-4300An improved continuous variable quantum key distribution (CVQKD) approach based on a heralded hybrid linear amplifier (HLA) is proposed in this study, which includes an ideal deterministic linear amplifier and a probabilistic noiseless linear amplifier. The CVQKD, which is based on an amplifier, enhances the signal-to-noise ratio and provides for fine control between high gain and strong noise reduction. We focus on the impact of two types of optical amplifiers on system performance: phase sensitive amplifiers (PSA) and phase insensitive amplifiers (PIA). The results indicate that employing amplifiers, local local oscillation-based CVQKD systems can enhance key rates and communication distances. In addition, the PIA-based CVQKD system has a broader application than the PSA-based system.Yin LiYijun WangYun MaoWeishao PengDi JinYing GuoMDPI AGarticlecontinuous-variable quantum key distributionoptical amplifierlocal local oscillatorScienceQAstrophysicsQB460-466PhysicsQC1-999ENEntropy, Vol 23, Iss 1395, p 1395 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	continuous-variable quantum key distribution optical amplifier local local oscillator Science Q Astrophysics QB460-466 Physics QC1-999
spellingShingle	continuous-variable quantum key distribution optical amplifier local local oscillator Science Q Astrophysics QB460-466 Physics QC1-999 Yin Li Yijun Wang Yun Mao Weishao Peng Di Jin Ying Guo Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator
description	An improved continuous variable quantum key distribution (CVQKD) approach based on a heralded hybrid linear amplifier (HLA) is proposed in this study, which includes an ideal deterministic linear amplifier and a probabilistic noiseless linear amplifier. The CVQKD, which is based on an amplifier, enhances the signal-to-noise ratio and provides for fine control between high gain and strong noise reduction. We focus on the impact of two types of optical amplifiers on system performance: phase sensitive amplifiers (PSA) and phase insensitive amplifiers (PIA). The results indicate that employing amplifiers, local local oscillation-based CVQKD systems can enhance key rates and communication distances. In addition, the PIA-based CVQKD system has a broader application than the PSA-based system.
format	article
author	Yin Li Yijun Wang Yun Mao Weishao Peng Di Jin Ying Guo
author_facet	Yin Li Yijun Wang Yun Mao Weishao Peng Di Jin Ying Guo
author_sort	Yin Li
title	Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator
title_short	Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator
title_full	Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator
title_fullStr	Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator
title_full_unstemmed	Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator
title_sort	continuous-variable quantum key distribution based on heralded hybrid linear amplifier with a local local oscillator
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/69310f7629754a5bbe633305875b405d
work_keys_str_mv	AT yinli continuousvariablequantumkeydistributionbasedonheraldedhybridlinearamplifierwithalocallocaloscillator AT yijunwang continuousvariablequantumkeydistributionbasedonheraldedhybridlinearamplifierwithalocallocaloscillator AT yunmao continuousvariablequantumkeydistributionbasedonheraldedhybridlinearamplifierwithalocallocaloscillator AT weishaopeng continuousvariablequantumkeydistributionbasedonheraldedhybridlinearamplifierwithalocallocaloscillator AT dijin continuousvariablequantumkeydistributionbasedonheraldedhybridlinearamplifierwithalocallocaloscillator AT yingguo continuousvariablequantumkeydistributionbasedonheraldedhybridlinearamplifierwithalocallocaloscillator
_version_	1718412289822949376

Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator

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