Quantum Noise Interference and Backaction Cooling in Cavity Nanomechanics

被引：191

作者：

Elste, Florian ^{[1
]}

Girvin, S. M. ^{[2
]}

Clerk, A. A. ^{[1
]}

机构：

[1] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[2] Yale Univ, Dept Phys, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 20期

基金：

美国国家科学基金会;

关键词：

RESONATOR;

D O I：

10.1103/PhysRevLett.102.207209

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a theoretical analysis of a novel cavity electromechanical system where a mechanical resonator directly modulates the damping rate kappa of a driven electromagnetic cavity. We show that via a destructive interference of quantum noise, the driven cavity can effectively act like a zero-temperature bath irrespective of the ratio kappa/omega(M), where omega(M) is the mechanical frequency. This scheme thus allows one to cool the mechanical resonator to its ground state without requiring the cavity to be in the so-called good cavity limit kappa <omega(M). The system described here could be implemented directly using setups similar to those used in recent experiments in cavity electromechanics.

引用

页数：4

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