Optomechanical photon detection and enhanced dispersive phonon readout

  • Ludwig M
  • Safavi-Naeini A
  • Painter O
 et al. 
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Abstract

In cavity optomechanics, nanomechanical motion couples to a localized optical mode. The regime of single-photon strong coupling is reached when the optical shift induced by a single phonon becomes comparable to the cavity linewidth. We consider a setup in this regime comprising two optical modes and one mechanical mode. For mechanical frequencies nearly resonant to the optical level splitting, we find the photon-phonon and the photon-photon interactions to be significantly enhanced. In addition to dispersive phonon detection in a novel regime, this offers the prospect of optomechanical photon measurement. We study these quantum nondemolition detection processes using both analytical and numerical approaches.

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Authors

  • Max Ludwig

  • Amir H. Safavi-Naeini

  • Oskar Painter

  • Florian Marquardt

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