Ground-state cooling of a micromechanical oscillator: Comparing cold damping and cavity-assisted cooling schemes

被引：500

作者：

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

Vitali, D. ^{[1
,2
]}

Tombesi, P. ^{[1
,2
]}

Gigan, S. ^{[3
,4
]}

Aspelmeyer, M. ^{[3
,4
]}

机构：

[1] Univ Camerino, CNISM, I-62032 Camerino, Italy

[2] Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy

[3] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

[4] Austrian Acad Sci, Informat IQOQI, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW A | 2008年 / 77卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.77.033804

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We provide a general framework to describe cooling of a micromechanical oscillator to its quantum ground state by means of radiation-pressure coupling with a driven optical cavity. We apply it to two experimentally realized schemes, back-action cooling via a detuned cavity and cold-damping quantum-feedback cooling, and we determine the ultimate quantum limits of both schemes for the full parameter range of a stable cavity. While both allow one to reach the oscillator's quantum ground state, we find that back-action cooling is more efficient in the good cavity limit, i.e., when the cavity bandwidth is smaller than the mechanical frequency, while cold damping is more suitable for the bad cavity limit. The results of previous treatments are recovered as limiting cases of specific parameter regimes.

引用

页数：9

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