2010/04/11 by Aranya B Bhattacherjee · 28 citations
Computer Science · Physics and Astronomy · #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Field (mathematics) #Mechanical and Optical Resonators #Mixing (physics) #Noise (video) #Quantum #Quantum Information and Cryptography #Quantum fluctuation #Quantum noise #Quantum optics #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1088/0953-4075/43/20/205301
published in Journal of Physics B Atomic Molecular and Optical Physics 43(20), 205301 (IOP Publishing) · 8 figures
arxiv created 2010/04/11 · openalex publication_date 2010/09/27 · arxiv updated 2015/05/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study an optomechanical system in which the collective density excitations (Bogoliubov modes) of a Bose Einstein condensate (BEC) is coupled to a cavity field. We show that the optical force changes the frequency and the damping constant of the collective density excitations of the BEC. We further analyze the occurrence of normal mode splitting (NMS) due to mixing of the fluctuations of the cavity field and the fluctuations of the condensate with finite atomic two-body interaction. The NMS is found to vanish for small values of the two-body interaction. We further show that the density excitations of the condensate can be used to squeeze the output quantum fluctuations of the light beam. This system may serve as an optomechanical control of quantum fluctuations using a Bose Einstein condensate.