Quantum sensing of noises in one and two dimensional quantum walks

Abstract Quantum walk (QW) provides a versatile platform for the realization of quantum algorithms. Due to the existence of the inevitable noises in the walk, the different quantum algorithms accommodating to different noises are demanded. Thus, the success of the algorithms based on the QW requires...

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Autores principales:	Tian Chen, Xiong Zhang, Xiangdong Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e172143a15f34be08d3376a9a9f558a4
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spelling	oai:doaj.org-article:e172143a15f34be08d3376a9a9f558a42021-12-02T12:31:51ZQuantum sensing of noises in one and two dimensional quantum walks10.1038/s41598-017-04795-22045-2322https://doaj.org/article/e172143a15f34be08d3376a9a9f558a42017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04795-2https://doaj.org/toc/2045-2322Abstract Quantum walk (QW) provides a versatile platform for the realization of quantum algorithms. Due to the existence of the inevitable noises in the walk, the different quantum algorithms accommodating to different noises are demanded. Thus, the success of the algorithms based on the QW requires us to sense different noises in the walk. Until now, the way to distinguish different noises in the walk has been discussed rarely. Here, we propose an efficient way to sense the noises in the one and two dimensional QWs. The populations of the coin in the walk with or without decoherence are presented. By only detecting the populations of the coin in the QW, we can determine whether there exists the decoherence in the total QW system. Moreover, the non-Markovianity of the coin in the one and two dimensional QWs is revealed, in which the coin is taken as an open quantum system, and the other components of the QW system is taken as the large environment. With the measured value of the non-Markovianity for the coin, we can conjecture which kinds of noise emerges in the one and two dimensional QWs.Tian ChenXiong ZhangXiangdong ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tian Chen Xiong Zhang Xiangdong Zhang Quantum sensing of noises in one and two dimensional quantum walks
description	Abstract Quantum walk (QW) provides a versatile platform for the realization of quantum algorithms. Due to the existence of the inevitable noises in the walk, the different quantum algorithms accommodating to different noises are demanded. Thus, the success of the algorithms based on the QW requires us to sense different noises in the walk. Until now, the way to distinguish different noises in the walk has been discussed rarely. Here, we propose an efficient way to sense the noises in the one and two dimensional QWs. The populations of the coin in the walk with or without decoherence are presented. By only detecting the populations of the coin in the QW, we can determine whether there exists the decoherence in the total QW system. Moreover, the non-Markovianity of the coin in the one and two dimensional QWs is revealed, in which the coin is taken as an open quantum system, and the other components of the QW system is taken as the large environment. With the measured value of the non-Markovianity for the coin, we can conjecture which kinds of noise emerges in the one and two dimensional QWs.
format	article
author	Tian Chen Xiong Zhang Xiangdong Zhang
author_facet	Tian Chen Xiong Zhang Xiangdong Zhang
author_sort	Tian Chen
title	Quantum sensing of noises in one and two dimensional quantum walks
title_short	Quantum sensing of noises in one and two dimensional quantum walks
title_full	Quantum sensing of noises in one and two dimensional quantum walks
title_fullStr	Quantum sensing of noises in one and two dimensional quantum walks
title_full_unstemmed	Quantum sensing of noises in one and two dimensional quantum walks
title_sort	quantum sensing of noises in one and two dimensional quantum walks
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e172143a15f34be08d3376a9a9f558a4
work_keys_str_mv	AT tianchen quantumsensingofnoisesinoneandtwodimensionalquantumwalks AT xiongzhang quantumsensingofnoisesinoneandtwodimensionalquantumwalks AT xiangdongzhang quantumsensingofnoisesinoneandtwodimensionalquantumwalks
_version_	1718394249133686784

Quantum sensing of noises in one and two dimensional quantum walks

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