{"article_type":"original","status":"public","date_published":"2017-04-03T00:00:00Z","date_created":"2018-12-11T11:47:23Z","publist_id":"7212","day":"03","title":"Bell correlations in spin-squeezed states of 500 000 atoms","issue":"14","scopus_import":"1","oa_version":"None","date_updated":"2025-08-05T13:55:38Z","volume":118,"month":"04","article_processing_charge":"No","doi":"10.1103/PhysRevLett.118.140401","intvolume":"       118","article_number":"140401 ","extern":"1","citation":{"apa":"Engelsen, N., Krishnakumar, R., Hosten, O., &#38; Kasevich, M. (2017). Bell correlations in spin-squeezed states of 500 000 atoms. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.118.140401\">https://doi.org/10.1103/PhysRevLett.118.140401</a>","ista":"Engelsen N, Krishnakumar R, Hosten O, Kasevich M. 2017. Bell correlations in spin-squeezed states of 500 000 atoms. Physical Review Letters. 118(14), 140401.","chicago":"Engelsen, Nils, Rajiv Krishnakumar, Onur Hosten, and Mark Kasevich. “Bell Correlations in Spin-Squeezed States of 500 000 Atoms.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.118.140401\">https://doi.org/10.1103/PhysRevLett.118.140401</a>.","short":"N. Engelsen, R. Krishnakumar, O. Hosten, M. Kasevich, Physical Review Letters 118 (2017).","ieee":"N. Engelsen, R. Krishnakumar, O. Hosten, and M. Kasevich, “Bell correlations in spin-squeezed states of 500 000 atoms,” <i>Physical Review Letters</i>, vol. 118, no. 14. American Physical Society, 2017.","mla":"Engelsen, Nils, et al. “Bell Correlations in Spin-Squeezed States of 500 000 Atoms.” <i>Physical Review Letters</i>, vol. 118, no. 14, 140401, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.140401\">10.1103/PhysRevLett.118.140401</a>.","ama":"Engelsen N, Krishnakumar R, Hosten O, Kasevich M. Bell correlations in spin-squeezed states of 500 000 atoms. <i>Physical Review Letters</i>. 2017;118(14). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.140401\">10.1103/PhysRevLett.118.140401</a>"},"abstract":[{"lang":"eng","text":"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 5×105 Rb87 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."}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication":"Physical Review Letters","publication_status":"published","external_id":{"pmid":["28430469"]},"type":"journal_article","language":[{"iso":"eng"}],"publisher":"American Physical Society","author":[{"first_name":"Nils","last_name":"Engelsen","full_name":"Engelsen, Nils"},{"first_name":"Rajiv","full_name":"Krishnakumar, Rajiv","last_name":"Krishnakumar"},{"first_name":"Onur","id":"4C02D85E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2031-204X","last_name":"Hosten","full_name":"Hosten, Onur"},{"last_name":"Kasevich","full_name":"Kasevich, Mark","first_name":"Mark"}],"_id":"593","quality_controlled":"1","pmid":1,"year":"2017"}