Controlling quantum interference in phase space with amplitude.

Sci Rep

Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo, 182-8585, Japan.

Published: May 2017

AI Article Synopsis

  • The study demonstrates quantum interference effects in phase space by analyzing the probabilities of photon numbers for displaced squeezed states.
  • The oscillations of these probabilities are influenced by the amplitude of the controlling coherent light, which indicates a novel method of manipulating quantum interference.
  • This finding contrasts with classical optics, where interference is typically managed through adjustments in relative phase rather than amplitude.

Article Abstract

We experimentally show a quantum interference in phase space by interrogating photon number probabilities (n = 2, 3, and 4) of a displaced squeezed state, which is generated by an optical parametric amplifier and whose displacement is controlled by amplitude of injected coherent light. It is found that the probabilities exhibit oscillations of interference effect depending upon the amplitude of the controlling light field. This phenomenon is attributed to quantum interference in phase space and indicates the capability of controlling quantum interference using amplitude. This remarkably contrasts with the oscillations of interference effects being usually controlled by relative phase in classical optics.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5442127PMC
http://dx.doi.org/10.1038/s41598-017-02540-3DOI Listing

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