Long Distance Nonlocality Test with Entanglement Swapping and Displacement-Based Measurements
arXiv:2302.01752 · doi:10.1103/PhysRevA.107.052611
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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