Radiation-pressure self-cooling of a micromirror in a cryogenic environment

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dc.creatorGroeblacher, Simon
dc.creatorGigan, Sylvain
dc.creatorBoehm, Hannes R.
dc.creatorZeilinger, Anton
dc.creatorAspelmeyer, Markus
dc.date2007-05-08
dc.date2008-02-13
dc.date.accessioned2026-07-07T09:20:03Z
dc.date.available2026-07-07T09:20:03Z
dc.descriptionWe demonstrate radiation-pressure cavity-cooling of a mechanical mode of a micromirror starting from cryogenic temperatures. To achieve that, a high-finesse Fabry-Perot cavity (F\approx 2200) was actively stabilized inside a continuous-flow 4He cryostat. We observed optical cooling of the fundamental mode of a 50mu x 50 mu x 5.4 mu singly-clamped micromirror at ω_m=3.5 MHz from 35 K to approx. 290 mK. This corresponds to a thermal occupation factor of <n>\approx 1x10^4. The cooling performance is only limited by the mechanical quality and by the optical finesse of the system. Heating effects, e.g. due to absorption of photons in the micromirror, could not be observed. These results represent a next step towards cavity-cooling a mechanical oscillator into its quantum ground state.
dc.identifierhttps://arxiv.org/abs/0705.1149
dc.identifierhttp://arxiv.org/abs/0705.1149
dc.identifierEurophys. Lett. 81, 54003 (2008)
dc.identifierdoi:10.1209/0295-5075/81/54003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154607
dc.subjectQuantum Physics
dc.subjectMaterials Science
dc.titleRadiation-pressure self-cooling of a micromirror in a cryogenic environment
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