Optical phase-space reconstruction of mirror position at the attometer level

Details Optical phase-space reconstruction of mirror position at the attometer level Optical phase-space reconstruction of mirror position at the attometer level

2002-07-09

arxiv.org/abs/quant-ph/0207049v2

Eur. Phys. J. D 22, 131 (2003)

Physics

Quantum Physics

10 pages, 11 figures

Scientific paper

10.1140/epjd/e2002-00217-9

We describe an experiment in which the quadratures of the position of an harmonically-bound mirror are observed at the attometer level. We have studied the Brownian motion of the mirror, both in the free regime and in the cold-damped regime when an external viscous force is applied by radiation pressure. We have also studied the thermal-noise squeezing when the external force is parametrically modulated. We have observed both the 50% theoretical limit of squeezing at low gain and the parametric oscillation of the mirror for a large gain.

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