Entanglement and Quantum Cooling of a Hybrid System Composed of BEC and Optical Cavity

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Eghbali Arani Mohammad; Najafi Manesh Masume; Askari Alidad

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ISSN: 2588-4824

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Paper Information

Journal: Iranian Journal of Applied Physics Year:1401 | Volume:12 | Issue:3 ( پیاپی30) Page(s): 19-33

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Title

Entanglement and Quantum Cooling of a Hybrid System Composed of BEC and Optical Cavity

Author(s)

Eghbali Arani Mohammad | Najafi Manesh Masume | Askari Alidad | Issue Writer Certificate

Keywords

EntanglementQ4

Quantum CoolingQ4

Bose-Einstein Condensate (BEC)Q4

Abstract

We present a theoretical interacting one-dimensional Bose-Einstein condensate (BEC) inside an optical cavity which is driven through of the fixed end mirrors. Under the Bogoliubov approximation and when the number of photons inside the cavity is not too large, the atomic field operator can be considered as a single-mode quantum field which is coupled to the radiation pressure of the intracavity field. In this way, the system behaves like an optomechanical system with an extra nonlinear term corresponding to the atom-atom interaction. We show that one of the best ways of tracing the effect of atomic interaction is to study the noise power spectrum of the field of the cavity. For this purpose, we study the light intensity spectrum of the cavity as well as the Entanglement between the optical cavity and the BEC. We show how the pattern of the power spectrum of the cavity changes due to the nonlinear effect of atomic collisions. Furthermore, it is shown that due to the s-wave scattering frequency of the atom-atom interaction, one can measure the strength of interatomic interaction. Besides, we show how the atomic collisions affect the Entanglement between subsystems and cooling behavior of the BEC atoms.

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