Quantum coherence in ultrastrong optomechanics
D. Hu, S.-Y. Huang, J.-Q. Liao, L. Tian, and H.-S. Goan
TL;DR
This paper investigates quantum coherence in ultrastrong optomechanical systems, emphasizing the role of system-bath interactions and introducing a dressed-state master equation to analyze dephasing, photon correlations, and entanglement.
Contribution
It presents a novel dressed-state master equation approach that accounts for photon-number-dependent dephasing effects in ultrastrong optomechanics.
Findings
Photon-number-dependent dephasing affects quantum coherence.
Cavity dephasing influences photon correlations.
Two-cavity entanglement is impacted by system-bath interactions.
Abstract
Ultrastrong light-matter interaction in an optomechanical system can result in nonlinear optical effects such as photon blockade. The system-bath couplings in such systems play an essential role in observing these effects. Here we study the quantum coherence of an optomechanical system with a dressed-state master equation approach. Our master equation includes photon-number-dependent terms that induce dephasing in this system. Cavity dephasing, second-order photon correlation, and two-cavity entanglement are studied with the dressed-state master equation.
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