Nonlinear quantum optomechanics in a Fano-mirror microcavity system

• URL: http://arxiv.org/abs/2602.20085v1
• Date: Mon, 23 Feb 2026 17:52:02 GMT
• Title: Nonlinear quantum optomechanics in a Fano-mirror microcavity system
• Authors: Lei Du, Juliette Monsel, Witlef Wieczorek, Janine Splettstoesser,
• Abstract summary: We study a Fano-mirror optomechanical system in the quantum nonlinear regime.<n>We predict clear quantum signatures, including photon blockade and the generation of mechanical cat states.
• Score: 0.9367986419783149
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We study a Fano-mirror optomechanical system in the quantum nonlinear regime. In this system, two strongly lossy optical modes hybridize through both coherent and dissipative couplings to form an effective optical mode with a drastically reduced linewidth. This linewidth reduction enables the system to access the single-photon strong-coupling and sideband-resolved regimes simultaneously. We formulate the system dynamics using an effective master-equation approach and benchmark it against quantum Langevin and dressed-state master-equation descriptions. With experimentally realistic parameters, we predict clear quantum signatures, including photon blockade and the generation of mechanical cat states. Our work establishes the Fano-mirror architecture as a promising platform for harnessing single-photon optomechanical nonlinearities for quantum state engineering under achievable experimental conditions.

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