A matter-wave Rarity–Tapster interferometer to demonstrate non-locality

نویسندگان

چکیده

We present an experimentally viable approach to demonstrating quantum non-locality in a matter wave system via Rarity-Tapster interferometer using two $s$-wave scattering halos generated by colliding helium Bose-Einstein condensates. The theoretical basis for this method is discussed, and its suitability quantified. As proof of concept, we demonstrate interferometric visibility $V=0.42(9)$, corresponding maximum CSHS-Bell parameter $S=1.1(1)$, the Clauser-Horne-Shimony-Holt (CHSH) version Bell inequality, between atoms separated $\sim 4$ correlation lengths. This constitutes significant step towards demonstration inequality violation motional degrees freedom massive particles possible measurements effects gravitationally sensitive system.

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ژورنال

عنوان ژورنال: European Physical Journal D

سال: 2022

ISSN: ['1434-6060', '1434-6079']

DOI: https://doi.org/10.1140/epjd/s10053-022-00551-y