Bell Correlations in Spin-Squeezed States of 500 000 Atoms

Autor:	Onur Hosten, Mark A. Kasevich, Nils J. Engelsen, Rajiv Krishnakumar
Rok vydání:	2017
Předmět:	Physics Quantum nonlocality Quantum mechanics 0103 physical sciences General Physics and Astronomy Small systems Quantum Physics 010306 general physics 01 natural sciences Quantum 010305 fluids & plasmas Spin-½
Zdroj:	Physical Review Letters. 118
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.118.140401
Popis:	Bell correlations, indicating nonlocality in composite quantum systems, were until recently only seen in small systems. Here, we demonstrate Bell correlations in squeezed states of 5×10^{5} ^{87}Rb atoms. The correlations are inferred using collective measurements as witnesses and are statistically significant to 124 standard deviations. The states are both generated and characterized using optical-cavity aided measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cbef2be83d0f46e84bc58caabb8f36b https://doi.org/10.1103/physrevlett.118.140401 Zobrazit plný text záznamu