Decoherence control of a single-photon optomechanical system in phase-sensitive reservoirs

Abstract

With technological advancements to achieve strong single-photon optomechanical coupling, it becomes necessary to explore open quantum optomechanical systems in strong single-photon coupling limit. Although some attention has been given to strongly coupled optomechanical systems in thermal environment, there behaviour under the influence of non-thermal environments, remains an open question. We report on the effect of squeezed vacuum/thermal reservoir on the decoherence of cavity photon Fock states in an optomechanical system in the strong single-photon coupling regime. We find that an increase in single-photon coupling strength leads to increase in decoherence under squeezed thermal reservoir compared to a thermal reservoir, except for a small range of values of the reservoir phase. We hence also show that having a squeezed reservoir gives greater control over system decoherence in the strong single-photon coupling regime, as expected. We perform simulations in the dressed-state master equation instead of the standard master equation. Our study might be important in understanding information processing in strongly coupled photonic systems and quantum memories.