Contextuality and inequality violations in a three-path interferometer

Ming Ji; Masataka Iinuma; Holger F. Hofmann

doi:10.1117/12.2674958

3 October 2023 Contextuality and inequality violations in a three-path interferometer

Ming Ji, Masataka Iinuma, Holger F. Hofmann

Proceedings Volume 12692, Quantum Communications and Quantum Imaging XXI; 1269204 (2023) https://doi.org/10.1117/12.2674958
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

Quantum contextuality can be observed in three path interferometers, suggesting a fundamental contradiction between wave propagation and particle propagation inherent in the wave-particle dualism. Here, we investigate this contradiction in a three path interferometer specifically designed to illustrate the paradoxical aspects of single particle interference. A particularly clear violation of non-contextual assumptions is obtained when interference effects suppress detection probabilities to zero in paths that seem to be necessary to explain the observation of photons in the output. This contradiction between detection probabilities in the paths and detection probabilities in the output cannot be explained by any assignment of photon paths through the interferometer, demonstrating a fundamental incompatibility of wave propagation and particle propagation.

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Ming Ji, Masataka Iinuma, and Holger F. Hofmann "Contextuality and inequality violations in a three-path interferometer", Proc. SPIE 12692, Quantum Communications and Quantum Imaging XXI, 1269204 (3 October 2023); https://doi.org/10.1117/12.2674958

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