Feedback cooling of a nanomechanical resonator
Asa HopkinsNorman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USAKurt JacobsT-8, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USASalman HabibT-8, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USAKeith SchwabLaboratory for Physical Sciences, College Park, Maryland 20740, USA
2003en
ABI
Аннотация
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.
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