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arXiv · 2302.01752

Long Distance Nonlocality Test with Entanglement Swapping and Displacement-Based Measurements

Anders J. E. Bjerrum·Jonatan B. Brask·Jonas S. Neergaard-Nielsen·Ulrik L. Andersen
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Abstract

We analyze an all-optical setup which enables Bell-inequality violation over long distances by exploiting probabilistic entanglement swapping. The setup involves only two-mode squeezers, displacements, beamsplitters, and on/off detectors. We analyze a scenario with dichotomic inputs and outputs, and check the robustness of the Bell inequality violation for up to 6 parties, with respect to phase-, amplitude-, and dark-count noise, as well as loss.

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Anders J. E. Bjerrum, Jonatan B. Brask, Jonas S. Neergaard-Nielsen, Ulrik L. Andersen. 2023-02-02. Long Distance Nonlocality Test with Entanglement Swapping and Displacement-Based Measurements. https://doi.org/10.1103/physreva.107.052611

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