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arXiv · 0705.1197

Passive Cooling of a Micromechanical Oscillator with a Resonant Electric Circuit

K. R. Brown·J. Britton·R. J. Epstein·J. Chiaverini·D. Leibfried·D. J. Wineland
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Abstract

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.

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K. R. Brown, J. Britton, R. J. Epstein, J. Chiaverini, D. Leibfried, D. J. Wineland. 2007-09-26. Passive Cooling of a Micromechanical Oscillator with a Resonant Electric Circuit. https://doi.org/10.1103/physrevlett.99.137205

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