A micropillar for cavity optomechanics
A. G. Kuhn (LKB - Jussieu), M. Bahriz (DMPH), O. Ducloux (DMPH), C., Chartier (DMPH), O. Le Traon (DMPH), T. Briant (LKB - Jussieu), P. -F., Cohadon (LKB - Jussieu), A. Heidmann (LKB - Jussieu), C. Michel (LMA), L., Pinard (LMA), R. Flaminio (LMA)
TL;DR
This paper introduces a novel micropillar resonator with high frequency and quality factor, designed for cavity optomechanics applications such as laser cooling to quantum ground state and quantum position measurement.
Contribution
The work presents a new micropillar geometry with a low-loss dielectric mirror for high-finesse cavities, enabling advanced quantum optomechanics experiments.
Findings
High-frequency mechanical resonance achieved
Low effective mass and high quality factor demonstrated
Potential for quantum ground state cooling and quantum-limited measurements
Abstract
We present a new micromechanical resonator designed for cavity optomechanics. We have used a micropillar geometry to obtain a high-frequency mechanical resonance with a low effective mass and a very high quality factor. We have coated a 60-m diameter low-loss dielectric mirror on top of the pillar and are planning to use this micromirror as part of a high-finesse Fabry-Perot cavity, to laser cool the resonator down to its quantum ground state and to monitor its quantum position fluctuations by quantum-limited optical interferometry.
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