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

Kieran F. Thomas; Bryce M. Henson; Yu Wang; Robert J. Lewis-Swan; Karen V. Kheruntsyan; Sean S. Hodgman; Andrew G. Truscott

doi:10.1140/epjd/s10053-022-00551-y

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

Kieran F. Thomas^*, Bryce M. Henson, Yu Wang, Robert J. Lewis-Swan, Karen V. Kheruntsyan, Sean S. Hodgman, Andrew G. Truscott

^*Corresponding author for this work

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Abstract

We present an experimentally viable approach to demonstrate quantum non-locality in a matter-wave system via a 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 is experimentally quantified. As a proof of concept, we demonstrate an interferometric visibility of V= 0.42 (9) , corresponding to a maximum CSHS-Bell parameter of S= 1.1 (1) , for the Clauser–Horne–Shimony–Holt (CHSH) version of the Bell inequality, between atoms separated by ∼ 4 correlation lengths. This constitutes a significant step toward a demonstration of a Bell inequality violation for motional degrees of freedom of massive particles and possible measurements of quantum effects in a gravitationally sensitive system.

Original language	English
Article number	244
Journal	European Physical Journal D
Volume	76
Issue number	12
DOIs	https://doi.org/10.1140/epjd/s10053-022-00551-y
Publication status	Published - Dec 2022

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title = "A matter-wave Rarity–Tapster interferometer to demonstrate non-locality",

abstract = "We present an experimentally viable approach to demonstrate quantum non-locality in a matter-wave system via a 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 is experimentally quantified. As a proof of concept, we demonstrate an interferometric visibility of V= 0.42 (9) , corresponding to a maximum CSHS-Bell parameter of S= 1.1 (1) , for the Clauser–Horne–Shimony–Holt (CHSH) version of the Bell inequality, between atoms separated by ∼ 4 correlation lengths. This constitutes a significant step toward a demonstration of a Bell inequality violation for motional degrees of freedom of massive particles and possible measurements of quantum effects in a gravitationally sensitive system.",

author = "Thomas, {Kieran F.} and Henson, {Bryce M.} and Yu Wang and Lewis-Swan, {Robert J.} and Kheruntsyan, {Karen V.} and Hodgman, {Sean S.} and Truscott, {Andrew G.}",

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T1 - A matter-wave Rarity–Tapster interferometer to demonstrate non-locality

AU - Thomas, Kieran F.

AU - Henson, Bryce M.

AU - Wang, Yu

AU - Lewis-Swan, Robert J.

AU - Kheruntsyan, Karen V.

AU - Hodgman, Sean S.

AU - Truscott, Andrew G.

PY - 2022/12

Y1 - 2022/12

N2 - We present an experimentally viable approach to demonstrate quantum non-locality in a matter-wave system via a 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 is experimentally quantified. As a proof of concept, we demonstrate an interferometric visibility of V= 0.42 (9) , corresponding to a maximum CSHS-Bell parameter of S= 1.1 (1) , for the Clauser–Horne–Shimony–Holt (CHSH) version of the Bell inequality, between atoms separated by ∼ 4 correlation lengths. This constitutes a significant step toward a demonstration of a Bell inequality violation for motional degrees of freedom of massive particles and possible measurements of quantum effects in a gravitationally sensitive system.

AB - We present an experimentally viable approach to demonstrate quantum non-locality in a matter-wave system via a 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 is experimentally quantified. As a proof of concept, we demonstrate an interferometric visibility of V= 0.42 (9) , corresponding to a maximum CSHS-Bell parameter of S= 1.1 (1) , for the Clauser–Horne–Shimony–Holt (CHSH) version of the Bell inequality, between atoms separated by ∼ 4 correlation lengths. This constitutes a significant step toward a demonstration of a Bell inequality violation for motional degrees of freedom of massive particles and possible measurements of quantum effects in a gravitationally sensitive system.

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DO - 10.1140/epjd/s10053-022-00551-y

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VL - 76

JO - European Physical Journal D

JF - European Physical Journal D

IS - 12

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ER -

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

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