Quantum optomechanics in the bistable regime

被引：85

作者：

Ghobadi, R. ^{[1
,2
,3
]}

Bahrampour, A. R. ^{[3
]}

Simon, C. ^{[1
,2
]}

机构：

[1] Univ Calgary, Inst Quantum Informat Sci, Calgary, AB T2N 1N4, Canada

[2] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada

[3] Sharif Univ Technol, Dept Phys, Tehran, Iran

来源：

PHYSICAL REVIEW A | 2011年 / 84卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

RADIATION-PRESSURE; SEPARABILITY CRITERION; MICROMECHANICAL RESONATOR; CAVITY; MIRROR; MICROMIRROR;

D O I：

10.1103/PhysRevA.84.033846

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the simplest optomechanical system with a focus on the bistable regime. The covariance matrix formalism allows us to study both cooling and entanglement in a unified framework. We identify two key factors governing entanglement; namely, the bistability parameter (i.e., the distance from the end of a stable branch in the bistable regime) and the effective detuning, and we describe the optimum regime where entanglement is greatest. We also show that, in general, entanglement is a nonmonotonic function of optomechanical coupling. This is especially important in understanding the optomechanical entanglement of the second stable branch.

引用

页数：7