Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes
We provide a general framework to describe cooling of a micromechanical oscillator to its quantum ground state by means of radiation-pressure coupling with a driven optical cavity. We apply it to two experimentally realized schemes, back-action cooling via a detuned cavity and cold-damping quantum-f...
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| Veröffentlicht in: | arXiv.org 2009-07 |
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| creator | Genes, Claudiu Vitali, David Tombesi, Paolo Gigan, Sylvain Aspelmeyer, Markus |
| description | We provide a general framework to describe cooling of a micromechanical oscillator to its quantum ground state by means of radiation-pressure coupling with a driven optical cavity. We apply it to two experimentally realized schemes, back-action cooling via a detuned cavity and cold-damping quantum-feedback cooling, and we determine the ultimate quantum limits of both schemes for the full parameter range of a stable cavity. While both allow to reach the oscillator's quantum ground state, we find that back-action cooling is more efficient in the good cavity limit, i.e. when the cavity bandwidth is smaller than the mechanical frequency, while cold damping is more suitable for the bad cavity limit. The results of previous treatments are recovered as limiting cases of specific parameter regimes. |
| doi_str_mv | 10.48550/arxiv.0705.1728 |
| format | Article |
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We apply it to two experimentally realized schemes, back-action cooling via a detuned cavity and cold-damping quantum-feedback cooling, and we determine the ultimate quantum limits of both schemes for the full parameter range of a stable cavity. While both allow to reach the oscillator's quantum ground state, we find that back-action cooling is more efficient in the good cavity limit, i.e. when the cavity bandwidth is smaller than the mechanical frequency, while cold damping is more suitable for the bad cavity limit. 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| source | arXiv.org; Free E- Journals |
| subjects | Cooling Damping Ground state Parameters Physics - General Relativity and Quantum Cosmology Physics - Mesoscale and Nanoscale Physics Physics - Optics Physics - Quantum Physics |
| title | Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes |
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