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Published December 15, 2003 | Published + Submitted
Journal Article Open

Feedback cooling of a nanomechanical resonator


Cooled, low-loss nanomechanical resonators offer the prospect of directly observing the quantum dynamics of mesoscopic systems. However, the present state of the art requires cooling down to the milliKelvin regime in order to observe quantum effects. Here we present an active feedback strategy based on continuous observation of the resonator position for the purpose of obtaining these low temperatures. In addition, we apply this to an experimentally realizable configuration, where the position monitoring is carried out by a single-electron transistor. Our estimates indicate that with current technology this technique is likely to bring the required low temperatures within reach.

Additional Information

© 2003 American Physical Society. Received 25 February 2003; revised manuscript received 2 July 2003; published 24 December 2003. The authors would like to thank Miles Blencowe, Alexander Korotkov, Daniel Steck, Howard Wiseman, Bernard Yerke, and Yong Zhang for helpful conversations and suggestions. Figure 1 is reprinted courtesy of Los Alamos Science. This research was supported in part by the Department of Energy, under Contract No. W-7405-ENG-36.

Attached Files

Published - PhysRevB.68.235328.pdf

Submitted - 0302529v1.pdf


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