Abstract
The steady-state properties of a hybrid system are investigated in this paper. Many cold atoms in the four-level tripod configuration are confined in an optical cavity with a movable end mirror. The confined cold atoms are driven with two external classical fields and an internal cavity field. The internal cavity field is excited by an external driving field and shows a radiation pressure upon the movable end mirror. The coupling of atom-light and opto-mechanical interactions is enhanced by embedding a four-level atomic system in a typical opto-mechanical cavity. And an enhanced nonlinear feedback mechanism is offered by the enhanced coupling, which permits the observation of five and three steady-state solutions for relevant variables near two-photon resonance. The enhanced nonlinear feedback mechanism also allows us to observe the obvious difference in the double-EIT phenomenon between the atom-assisted opto-mechanical system and usual atom-field system.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China 11447149, 11404242, 11547145, 11604284 and 51172194, the Foundation of the Education Department of Jilin Province [2013]387, and the Natural Science Youth Teacher Foundation of Xuzhou Institute of Technology XKY2016212.
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Fan, QB., Wang, YR., Chen, J. et al. Steady-State Solutions Originating from an Enhanced Nonlinear Feedback in a Hybrid Opto-mechanical System. Int J Theor Phys 56, 2052–2060 (2017). https://doi.org/10.1007/s10773-017-3348-0
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DOI: https://doi.org/10.1007/s10773-017-3348-0