Coherent coupling between an optomechanical membrane and an interacting photon Bose-Einstein condensate

In this paper, we study theoretically the optomechanical interaction of an interacting condensate of photons with an oscillating mechanical membrane in a microcavity. We show that in the Bogoliubov approximation, due to the large number of photons in the condensate, there is a linear strong effectiv...

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Bibliographic Details
Published in:Journal of modern optics 2017-09, Vol.64 (17), p.1725-1738
Main Authors: Fani, M., Naderi, M. H.
Format: Article
Language:English
Subjects:
Bose-Einstein condensates
cavity optomechanics
Compressing
Condensates
Condensation
Cooling
Coupling
field squeezing
ground state cooling
Hybrid systems
Linearity
optomechanical entanglement
Oscillating
Photon scatter
Photonic Bose-Einstein condensate
Photonics
Photons
Quantum entanglement
Quantum theory
Scattering
Temperature
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Summary:In this paper, we study theoretically the optomechanical interaction of an interacting condensate of photons with an oscillating mechanical membrane in a microcavity. We show that in the Bogoliubov approximation, due to the large number of photons in the condensate, there is a linear strong effective coupling between the Bogoliubov mode of the photonic Bose-Einstein condensate (BEC) and the mechanical motion of the membrane which depends on the photon-photon scattering potential. This coupling leads to the cooling of the mechanical motion, the normal mode splitting (NMS), the squeezing of the output field and the entanglement between the excited mode of the cavity and the mechanical mode. Since the photon condensation occurs at room temperature, this hybrid system can be potentially considered as a room temperature source of squeezed light as well as a suited candidate for exploring the quantum effects. We show that, on one hand, the non-linearity of the photon gas increases the degree of the squeezing of the output field of the microcavity and the efficiency of the cooling process at high temperatures. On the other hand, it reduces the NMS in the displacement spectrum of the oscillating membrane and the degree of the optomechanical entanglement. In addition, the temperature of the photonic BEC can be used to control the above-mentioned phenomena.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2017.1311957