Testing higher-order quantum interference with many-particle states
- URL: http://arxiv.org/abs/2006.09496v2
- Date: Wed, 12 May 2021 13:19:24 GMT
- Title: Testing higher-order quantum interference with many-particle states
- Authors: Marc-Oliver Pleinert, Alfredo Rueda, Eric Lutz, Joachim von Zanthier
- Abstract summary: We study many-particle higher-order interference using a two-photon-five-slit setup.
We observe nonzero two-particle interference up to fourth order, corresponding to the interference of two distinct two-particle paths.
We further show that fifth-order interference is restricted to $10-3$ in the intensity-correlation regime and to $10-2$ in the photon-correlation regime, thus providing novel bounds on higher-order quantum interference.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum theory permits interference between indistinguishable paths but, at
the same time, restricts its order. Single-particle interference, for instance,
is limited to the second order, that is, to pairs of single-particle paths. To
date, all experimental efforts to search for higher-order interferences beyond
those compatible with quantum mechanics have been based on such single-particle
schemes. However, quantum physics is not bounded to single-particle
interference. We here experimentally study many-particle higher-order
interference using a two-photon-five-slit setup. We observe nonzero
two-particle interference up to fourth order, corresponding to the interference
of two distinct two-particle paths. We further show that fifth-order
interference is restricted to $10^{-3}$ in the intensity-correlation regime and
to $10^{-2}$ in the photon-correlation regime, thus providing novel bounds on
higher-order quantum interference.
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