Discrete-time quadrature feedback cooling of a radio-frequency mechanical resonator

被引：13
|
作者：
Poot, M. [1 ]
Etaki, S. [1 ,2 ]
Yamaguchi, H. [2 ]
van der Zant, H. S. J. [1 ]
机构：
[1] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands
[2] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan
来源：
APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 01期
关键词：
MICROMECHANICAL RESONATOR; GROUND-STATE; MOTION;
D O I：
10.1063/1.3608148
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have employed a feedback cooling scheme, which combines high-frequency mixing with digital signal processing. The frequency and damping rate of a 2 MHz micromechanical resonator embedded in a dc SQUID are adjusted with the feedback, and active cooling to a temperature of 14.3 mK is demonstrated. This technique can be applied to GHz resonators and allows for flexible control strategies. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3608148]
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页数：3
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