Optical levitation of a mirror for reaching the standard quantum limit.

  title={Optical levitation of a mirror for reaching the standard quantum limit.},
  author={Yuta Michimura and Yuya Kuwahara and Takafumi Ushiba and Nobuyuki Matsumoto and Masaki Ando},
  journal={Optics express},
  volume={25 12},
We propose a new method to optically levitate a macroscopic mirror with two vertical Fabry-Pérot cavities linearly aligned. This configuration gives the simplest possible optical levitation in which the number of laser beams used is the minimum of two. We demonstrate that reaching the standard quantum limit (SQL) of a displacement measurement with our system is feasible with current technology. The cavity geometry and the levitated mirror parameters are designed to ensure that the Brownian… 

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