Generalised quantum interference
量子物理
2026-06-30 v1
摘要
Hong-Ou-Mandel interference is one of the clearest signatures of quantum behaviour: two identical photons meeting at a beam splitter always leave together. Here we demonstrate that this symmetry can be broken. Using a programmable integrated photonic processor, we interfere imbalanced two-photon states on a variable beam splitter and show that the output state of quantum interference can be continuously tuned, reaching the extreme case where destructive interference suppresses bunching at one output port. The asymmetry creates a forbidden bunching channel: photons may exit together at one port or separately at both ports, but cannot emerge together at the other port.
引用
@article{arxiv.2606.31053,
title = {Generalised quantum interference},
author = {Sebastian Malewicz and Laura Serino and Marcelo P. de Almeida and Markus Rambach and Ming Su and Jihun Cha and Till J. Weinhold and Austin Lund and A. G. White},
journal= {arXiv preprint arXiv:2606.31053},
year = {2026}
}