Feedback cooling of a nanomechanical resonator

By A. Hopkins, Kurt Jacobs, Salman Habib, K. Schwab. 2003

161 citations recorded by the source corpus.

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.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/4e9a8447e1129a8c983f0bce2bdfc4c017681daf

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In Atomic and Molecular Physics, and Optics

In Statistical and Nonlinear Physics

Citations in the corpus

Quantum feedback: theory, experiments, and applications (2014, background): “esonators do not have the required eﬃciency, but we expect this to change in the near future. Cooling via measurement has been investigated both for Markovian feedback [258–260] and Bayesian feedback [128, 129, 189, 190, 261]. Feedback can also be used to create and control highly non-classical stat”
Mechanical systems in the quantum regime (2011, methodology): “Feedback control was already used to regulate the motion of soft cantilevers [213, 214, 215] fo r magnetic resonance force microscopy [216], when it was realized that this technique can also be used to cool a mechan ical resonator towards its ground state [217].”