A. Nunnenkamp, K. Borkje, S. M. Girvin
In this paper we discuss how red-sideband cooling is modified in the
single-photon strong-coupling regime where the radiation pressure of a single
photon displaces the mechanical oscillator by more than its zero-point
uncertainty. Using Fermi's Golden rule we calculate the transition rates
induced by the optical drive without linearizing the optomechanical
interaction. In the resolved-sideband limit we find multiple phonon cooling
resonances for strong single-photon coupling which lead to non-thermal
steady-states accompanied by multiple mechanical sidebands in the optical
output spectrum. Our study generalizes the standard linear cooling theory.
View original:
http://arxiv.org/abs/1202.3263
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