Modulation-Based Atom-Mirror Entanglement and Mechanical Squeezing in an Unresolved-Sideband Optomechanical System

被引：37

作者：

Bai, Cheng-Hua ^{[1
]}

Wang, Dong-Yang ^{[1
]}

Zhang, Shou ^{[1
,2
]}

Liu, Shutian ^{[1
]}

Wang, Hong-Fu ^{[2
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Heilongjiang, Peoples R China

[2] Yanbian Univ, Coll Sci, Dept Phys, Yanji 133002, Jilin, Peoples R China

来源：

ANNALEN DER PHYSIK | 2019年 / 531卷 / 07期

基金：

中国国家自然科学基金;

关键词：

entanglement; mechanical squeezing; modulation; optomechanics; CAVITY; STATE; MOTION; LIMIT;

D O I：

10.1002/andp.201800271

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A hybrid optomechanical system which is composed of an atomic ensemble and a standard optomechanical cavity driven by a periodically modulated external laser field is investigated. Based on the simple periodic modulation forms of the driving amplitude and effective optomechanical coupling, respectively, the atom-mirror entanglement is discussed in detail. It is found that the maximum of the entanglement in the unresolved-sideband regime can be further enhanced compared with the non-modulation regime. On the other hand, we find that the introduction of the atomic ensemble permits the mechanical squeezing induced by the periodic amplitude modulation can be successfully generated even in the unresolved-sideband regime. Due to the self-cooling mechanism constructed by the atomic ensemble, the mechanical squeezing scheme no longer requires the extra precooling technologies.

引用

页数：14

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