Synchronized Bell protocol for detecting non-locality between modes of light

• URL: http://arxiv.org/abs/2210.05341v3
• Date: Mon, 29 May 2023 16:02:51 GMT
• Title: Synchronized Bell protocol for detecting non-locality between modes of light
• Authors: Madhura Ghosh Dastidar, Gniewomir Sarbicki and Vidya Praveen Bhallamudi
• Abstract summary: We discuss a possible detection of non-locality in two-mode light states in the Bell protocol. We show that non-locality cannot be detected if the phases of displacements are unknown.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In the following paper, we discuss a possible detection of non-locality in two-mode light states in the Bell protocol, where the local observables are constructed using displacement operators, implemented by Mach-Zender Interferometers fed by strong coherent states. We report numerical results showing that maximizing the Braunstein-Caves Chained Bell (BCCB) inequalities requires equal phases of displacements. On the other hand, we prove that non-locality cannot be detected if the phases of displacements are unknown. Hence, the Bell experiment has to be equipped with a synchronization mechanism. We discuss such a mechanism and its consequences.

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