The strong-to-weak coupling transition in optomechanical state transfer is interpreted as a passive PT-symmetry breaking transition, with exact Lindblad/non-Hermitian agreement only in the single-excitation subspace.
Parametric Normal-Mode Splitting in Cavity Optomechanics
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abstract
Recent experimental progress in cavity optomechanics has allowed cooling of mesoscopic mechanical oscillators via dynamic backaction provided by the parametric coupling to either an optical or an electrical resonator. Here we analyze the occurrence of normal-mode splitting in backaction cooling at high input power. We find that a hybridization of the oscillator's motion with the fluctuations of the driving field occurs and leads to a splitting of the mechanical and optical fluctuation spectra. Moreover, we find that cooling experiences a classical limitation through the cavity lifetime.
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quant-ph 1years
2019 1verdicts
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$\mathcal{PT}$-symmetry from Lindblad dynamics in an optomechanical system
The strong-to-weak coupling transition in optomechanical state transfer is interpreted as a passive PT-symmetry breaking transition, with exact Lindblad/non-Hermitian agreement only in the single-excitation subspace.