Open AccessGround state cooling of an optomechanical resonator assisted by a Λ-type atom
Author(s) -
Shuo Zhang,
Jianqi Zhang,
Jie Zhang,
Chun-Wang Wu,
Wei Wu,
PingXing Chen
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.028118
Subject(s) - resonator , physics , resolved sideband cooling , sideband , ground state , coupling (piping) , photon , atom (system on chip) , laser cooling , optics , optomechanics , cavity quantum electrodynamics , optical cavity , atomic physics , quantum , materials science , quantum mechanics , laser , open quantum system , microwave , computer science , metallurgy , embedded system
We propose a ground state cooling scheme for an optomechanical resonator based on the system of one Λ-type three-level atom trapped in an optomechanical cavity. This cooling scheme works in a single-photon coupling, and strong atom-cavity coupling regimes. By investigating the cooling dynamics, we find that there is an EIT-like quantum coherent effect in this system which can suppress the undesired transitions for heating. Moreover, our study shows that the final average phonon number of the optomechanical resonator can be smaller than the one based on the sideband cooling. Furthermore, the ground state cooling of the resonator can still be achieved after thermal fluctuations included. In addition, in comparison with previous cooling methods, there are fewer limitations on the decay rates of both the cavity and the atom in this scheme. As a result, this scheme is very suitable to realize the ground cooling of an optomechanical resonator in the experiment.