Implementation of nonlocal multi-photon interference by mode swapping

Abstract:Multi-photon interference can be observed using independently generated photons as input. In the most simple case, these photons meet up at a beam splitter, resulting in quantum interference between transmission and reflection of the photons. Here, we show that non-local multi-photon interference can be implemented by using a mode swap operation to generate entanglement between the photons detected in the outputs of two spatially separated interferometers. The spatial separation of the output photons makes this implementation of multi-photon interference particularly suitable for quantum protocols that distribute quantum information to different parties.

arXiv:2608.22850 [quant-ph]

(or arXiv:2608.22850v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2608.22850 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

Proc. SPIE 13618, Quantum Communications and Quantum Imaging XXIII, 136180H (2025)

https://doi.org/10.1117/12.3063247 Focus to learn more DOI(s) linking to related resources

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