Frequency-resolved photon correlations in cavity optomechanics

M. K. Schmidt, R. Esteban, G. Giedke, J. Aizpurua, A. González-Tudela

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Frequency-resolved photon correlations have proven to be a useful resource to unveil nonlinearities hidden in standard observables such as the spectrum or the standard (color-blind) photon correlations. In this manuscript, we analyze the frequency-resolved correlations of the photons being emitted from an optomechanical system where light is nonlinearly coupled to the quantized motion of a mechanical mode of a resonator, but where the quantum nonlinear response is typically hard to evidence. We present and unravel a rich landscape of frequency-resolved correlations, and discuss how the time-delayed correlations can reveal information about the dynamics of the system. We also study the dependence of correlations on relevant parameters such as the single-photon coupling strength, the filtering linewidth, or the thermal noise in the environment. This enriched understanding of the system can trigger new experiments to probe nonlinear phenomena in optomechanics, and provide insights into dynamics of generic nonlinear systems.
Original languageEnglish
Article number034005
Pages (from-to)1-19
Number of pages19
JournalQuantum Science and Technology
Issue number3
Publication statusPublished - Jul 2021

Bibliographical note

Copyright © 2021 The Author(s). Published by IOP Publishing Ltd. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


  • optomechanics
  • Kerr
  • intensity correlations
  • Hanbury Brown–Twiss


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