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arXiv · 2608.22850

Implementation of nonlocal multi-photon interference by mode swapping

Holger F. Hofmann·Yuki Kodama·Jonte R. Hance
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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.

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Holger F. Hofmann, Yuki Kodama, Jonte R. Hance. 2026-08-24. Implementation of nonlocal multi-photon interference by mode swapping. https://doi.org/10.1117/12.3063247

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