Passive cooling of a micromechanical oscillator with a resonant electric circuit

被引：76

作者：

Brown, K. R. ^{[1
]}

Britton, J. ^{[1
]}

Epstein, R. J. ^{[1
]}

Chiaverini, J. ^{[1
]}

Leibfried, D. ^{[1
]}

Wineland, D. J. ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Div Time & Frequency, Boulder, CO 80305 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.99.137205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We cool the fundamental mode of a miniature cantilever by capacitively coupling it to a driven rf resonant circuit. Cooling results from the rf capacitive force, which is phase shifted relative to the cantilever motion. We demonstrate the technique by cooling a 7 kHz cantilever from room temperature to 45 K, obtaining reasonable agreement with a model for the cooling, damping, and frequency shift. Extending the method to higher frequencies in a cryogenic system could enable ground state cooling and may prove simpler than related optical experiments in a low temperature apparatus.

引用

页数：4

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