Improving the sensitivity of weak microwave signal detection with optomechanical system under non-Markovian regime

Li, Xun; Xiong, Biao; Chao, Shi‐Lei; Zhou, Ling

doi:10.1364/josab.36.001363

Cited by 3 publications

(1 citation statement)

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“…Due to the experimental progress [23], the non-Markovian effects of the optomechanical system has been studied extensively [28,[31][32][33][34][35][36][37][38][39]. The results of these studied are affected by the shape of the spectral density, which is often based on theoretical assumptions.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the mechanical reservoir spectral density in optomechanical system

Zhang,

Liang,

Cheng

et al. 2020

Preprint

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To investigate the dynamical behavior of a quantum system embedded in a memory environment, it is crucial to obtain the knowledge of the reservoir spectral density. However, such knowledge is usually based on a priori assumptions about the environment. In this paper, we put forward a method to obtain key information about the reservoir spectral density of an optomechanical resonator without additional assumptions about the spectral shape. This is achieved by detecting and analysing the optical transmission rate of the emitted light. In the weak optomechanical singlephoton coupling regime, we establish a simple relation between the output light spectrum and the reservoir spectral density. This provide a straightforward and effective way for reconstructing the spectral density profile in single or even multiple decoherence channels.

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