Multipartite entanglement of billions of motional atoms heralded by single photon

Abstract Quantum theory does not prevent entanglement from being created and observed in macroscopic physical systems, in reality however, the accessible scale of entanglement is still very limited due to decoherence effects. Recently, entanglement has been observed among atoms from thousands to mil...

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Autores principales:	Hang Li, Jian-Peng Dou, Xiao-Ling Pang, Chao-Ni Zhang, Zeng-Quan Yan, Tian-Huai Yang, Jun Gao, Jia-Ming Li, Xian-Min Jin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/e308c3ded0094616882b39e25ae76a5f
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spelling	oai:doaj.org-article:e308c3ded0094616882b39e25ae76a5f2021-12-02T18:01:39ZMultipartite entanglement of billions of motional atoms heralded by single photon10.1038/s41534-021-00476-12056-6387https://doaj.org/article/e308c3ded0094616882b39e25ae76a5f2021-10-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00476-1https://doaj.org/toc/2056-6387Abstract Quantum theory does not prevent entanglement from being created and observed in macroscopic physical systems, in reality however, the accessible scale of entanglement is still very limited due to decoherence effects. Recently, entanglement has been observed among atoms from thousands to millions levels in extremely low-temperature and well isolated systems. Here, we create multipartite entanglement of billions of motional atoms in a quantum memory at room temperature and certify the genuine entanglement via M-separability witness associated with photon statistics. The information contained in a single photon is found strongly correlated with the excitation shared by the motional atoms, which intrinsically address the large system and therefore stimulate the multipartite entanglement. Remarkably, our heralded and quantum memory built-in entanglement generation allows us to directly observe the dynamic evolution of entanglement depth and further to reveal the effects of decoherence. Our results verify the existence of genuine multipartite entanglement among billions of motional atoms at ambient conditions, significantly extending the boundary of the accessible scale of entanglement.Hang LiJian-Peng DouXiao-Ling PangChao-Ni ZhangZeng-Quan YanTian-Huai YangJun GaoJia-Ming LiXian-Min JinNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 Hang Li Jian-Peng Dou Xiao-Ling Pang Chao-Ni Zhang Zeng-Quan Yan Tian-Huai Yang Jun Gao Jia-Ming Li Xian-Min Jin Multipartite entanglement of billions of motional atoms heralded by single photon
description	Abstract Quantum theory does not prevent entanglement from being created and observed in macroscopic physical systems, in reality however, the accessible scale of entanglement is still very limited due to decoherence effects. Recently, entanglement has been observed among atoms from thousands to millions levels in extremely low-temperature and well isolated systems. Here, we create multipartite entanglement of billions of motional atoms in a quantum memory at room temperature and certify the genuine entanglement via M-separability witness associated with photon statistics. The information contained in a single photon is found strongly correlated with the excitation shared by the motional atoms, which intrinsically address the large system and therefore stimulate the multipartite entanglement. Remarkably, our heralded and quantum memory built-in entanglement generation allows us to directly observe the dynamic evolution of entanglement depth and further to reveal the effects of decoherence. Our results verify the existence of genuine multipartite entanglement among billions of motional atoms at ambient conditions, significantly extending the boundary of the accessible scale of entanglement.
format	article
author	Hang Li Jian-Peng Dou Xiao-Ling Pang Chao-Ni Zhang Zeng-Quan Yan Tian-Huai Yang Jun Gao Jia-Ming Li Xian-Min Jin
author_facet	Hang Li Jian-Peng Dou Xiao-Ling Pang Chao-Ni Zhang Zeng-Quan Yan Tian-Huai Yang Jun Gao Jia-Ming Li Xian-Min Jin
author_sort	Hang Li
title	Multipartite entanglement of billions of motional atoms heralded by single photon
title_short	Multipartite entanglement of billions of motional atoms heralded by single photon
title_full	Multipartite entanglement of billions of motional atoms heralded by single photon
title_fullStr	Multipartite entanglement of billions of motional atoms heralded by single photon
title_full_unstemmed	Multipartite entanglement of billions of motional atoms heralded by single photon
title_sort	multipartite entanglement of billions of motional atoms heralded by single photon
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e308c3ded0094616882b39e25ae76a5f
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Multipartite entanglement of billions of motional atoms heralded by single photon

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