Adaptive quantum state tomography via weak value

Quantum state tomography strategy via weak value is valid for arbitrary dimensional systems, and can be easily realized. However, the efficiency of quantum state tomography strategy via weak value is lower than that of the conventional quantum state tomography (QST), especially for high-dimensional...

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Autores principales:	Xuanmin Zhu, Yuanchun Deng, Runping Gao, Qun Wei, Lixia Liu, Zijiang Luo
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Quantum state tomography Weak measurement Weak value Physics QC1-999
Acceso en línea:	https://doaj.org/article/50367a8925c04fca8253896c5c9fe2a1
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spelling	oai:doaj.org-article:50367a8925c04fca8253896c5c9fe2a12021-12-04T04:33:48ZAdaptive quantum state tomography via weak value2211-379710.1016/j.rinp.2021.104999https://doaj.org/article/50367a8925c04fca8253896c5c9fe2a12021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2211379721010020https://doaj.org/toc/2211-3797Quantum state tomography strategy via weak value is valid for arbitrary dimensional systems, and can be easily realized. However, the efficiency of quantum state tomography strategy via weak value is lower than that of the conventional quantum state tomography (QST), especially for high-dimensional systems. To improve the efficiency of the scheme, we propose a two-step adaptive quantum state tomography via weak value for pure states (AQSTW). In AQSTW, by using appropriate measurement strength, the efficiency of AQSTW is significantly larger than that of the conventional QST, especially for high-dimensional systems. And AQSTW can be easily implemented. These results demonstrate AQSTW may be useful in the measurements of the unknown quantum states.Xuanmin ZhuYuanchun DengRunping GaoQun WeiLixia LiuZijiang LuoElsevierarticleQuantum state tomographyWeak measurementWeak valuePhysicsQC1-999ENResults in Physics, Vol 31, Iss , Pp 104999- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Quantum state tomography Weak measurement Weak value Physics QC1-999
spellingShingle	Quantum state tomography Weak measurement Weak value Physics QC1-999 Xuanmin Zhu Yuanchun Deng Runping Gao Qun Wei Lixia Liu Zijiang Luo Adaptive quantum state tomography via weak value
description	Quantum state tomography strategy via weak value is valid for arbitrary dimensional systems, and can be easily realized. However, the efficiency of quantum state tomography strategy via weak value is lower than that of the conventional quantum state tomography (QST), especially for high-dimensional systems. To improve the efficiency of the scheme, we propose a two-step adaptive quantum state tomography via weak value for pure states (AQSTW). In AQSTW, by using appropriate measurement strength, the efficiency of AQSTW is significantly larger than that of the conventional QST, especially for high-dimensional systems. And AQSTW can be easily implemented. These results demonstrate AQSTW may be useful in the measurements of the unknown quantum states.
format	article
author	Xuanmin Zhu Yuanchun Deng Runping Gao Qun Wei Lixia Liu Zijiang Luo
author_facet	Xuanmin Zhu Yuanchun Deng Runping Gao Qun Wei Lixia Liu Zijiang Luo
author_sort	Xuanmin Zhu
title	Adaptive quantum state tomography via weak value
title_short	Adaptive quantum state tomography via weak value
title_full	Adaptive quantum state tomography via weak value
title_fullStr	Adaptive quantum state tomography via weak value
title_full_unstemmed	Adaptive quantum state tomography via weak value
title_sort	adaptive quantum state tomography via weak value
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/50367a8925c04fca8253896c5c9fe2a1
work_keys_str_mv	AT xuanminzhu adaptivequantumstatetomographyviaweakvalue AT yuanchundeng adaptivequantumstatetomographyviaweakvalue AT runpinggao adaptivequantumstatetomographyviaweakvalue AT qunwei adaptivequantumstatetomographyviaweakvalue AT lixialiu adaptivequantumstatetomographyviaweakvalue AT zijiangluo adaptivequantumstatetomographyviaweakvalue
_version_	1718372965178933248

Adaptive quantum state tomography via weak value

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