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arXiv · 2007.01630

Optical trapping of the transversal motion for an optically levitated mirror

Takuya Kawasaki·Naoki Kita·Koji Nagano·Shotaro Wada·Yuya Kuwahara·Masaki Ando·Yuta Michimura
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Abstract

Optomechanical systems are suitable for elucidating quantum phenomena at the macroscopic scale in the sense of the mass scale. The systems should be well-isolated from the environment to avoid classical noises, which conceal quantum signals. Optical levitation is a promising way to isolate optomechanical systems from the environment. To realize optical levitation, all degrees of freedom need to be trapped. Until now, longitudinal trapping and rotational trapping of a mirror with optical radiation pressure have been studied in detail and validated with various experiments. However, less attention has been paid to the transversal trapping of a mirror. Herein, we report a pioneering result where we experimentally confirmed transversal trapping of a mirror of a Fabry-Pérot cavity using a torsional pendulum. Through this demonstration, we experimentally proved that optical levitation is realizable with only two Fabry-Pérot cavities that are aligned vertically. This work paves the way toward optical levitation and realizing a macroscopic quantum system.

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Takuya Kawasaki, Naoki Kita, Koji Nagano, Shotaro Wada, Yuya Kuwahara, Masaki Ando, Yuta Michimura. 2020-12-21. Optical trapping of the transversal motion for an optically levitated mirror. https://doi.org/10.1103/physreva.102.053520

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