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On the Physical Nature of the Hong-ou-Mandel Effect

V. A. Kuz’menko

Published Oct 1, 2018• 0 citations
OpenAlex

Abstract

It is noted that widely known Hong-Ou-Mandel (HOM) effect is one of numerous manifestations of fundamental property of quantum physics – its time reversal noninvariance.

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The Hong-Ou-Mandel effect (HOH) is used in many fields of quantum optics and quantum technologies. It is well known that this effect occurs when two identical photons in different modes hit a beam splitter (BS) with a reflection coefficient of R=1/2. The classical effect consists in the interaction of two photons and was first experimentally demonstrated by Hong and co-authors in 1987. In this paper, it was shown that this effect can be realized using free charged particles. It was determined when this effect would manifest itself. The results obtained for HOME diving have an analytical form, which simplifies its analysis. The Hong-Ou-Mandel effect is of fundamental importance in quantum physics and quantum computer science, as it demonstrates quantum entanglement and interference. The results of the research can be used in problems of quantum physics and quantum computer science.
Quantum technologies based on the particle nature of a photon has been progressed over the last several decades, where the fundamental quantum feature of entanglement has been tested by Hong-Ou-Mandel (HOM) type anticorrelation as well as Bell-type nonlocal correlation. Mutually exclusive quantum natures of the wave-particle duality of a single photon have been intensively investigated to understand the fundamental physics of mysterious quantum nature. Here, we revisit the HOM-type quantum correlation to answer the question whether the HOM-type anticorrelation can be a test tool for quantum entanglement. For this, a pair of spontaneous parametric down converted photons is tested for the anticorrelation of HOM effects, where the SPDC-generated photon pair is not in an entangled state.