Dispersively coupled optomechanical system

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• Yutaka Shikano (Keio University)
• Wednesday 20 June 2018, 14:30-15:30
• Physics West 117.

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In the optomechanical cooling of a dispersively coupled oscillator, it is only possible to reach the oscillator ground state in the resolved sideband regime, where the cavity-mode line width is smaller than the resonant frequency of the mechanical oscillator being cooled. In this paper, we show that the dispersively coupled system can be cooled to the ground state in the unresolved sideband regime using an ancillary oscillator, which is coupled to the same optical mode via dissipative interaction. The ancillary oscillator has a resonant frequency close to that of the target oscillator; thus, the ancillary oscillator is also in the unresolved sideband regime. We require only a single blue-detuned laser mode to drive the cavity.

[*] Y.-X. Zhang, S. Wu, Z.-B. Chen, and Y. Shikano, Phys. Rev. A 94 , 023823 (2016).

This talk is part of the Astrophysics Seminars series.

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