中国物理B ›› 2014, Vol. 23 ›› Issue (2): 20315-020315.doi: 10.1088/1674-1056/23/2/020315

• GENERAL • 上一篇    下一篇

Dynamical Casimir effect in superradiant light scattering by Bose–Einstein condensate in an optomechanical cavity

Sonam Mahajana, Neha Aggarwala b, Aranya B Bhattacherjeeb c, ManMohana   

  1. a Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India;
    b Department of Physics, ARSD College, University of Delhi (South Campus), New Delhi-110021, India;
    c School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
  • 收稿日期:2013-06-21 修回日期:2013-08-19 出版日期:2013-12-12 发布日期:2013-12-12

Dynamical Casimir effect in superradiant light scattering by Bose–Einstein condensate in an optomechanical cavity

Sonam Mahajana, Neha Aggarwala b, Aranya B Bhattacherjeeb c, ManMohana   

  1. a Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India;
    b Department of Physics, ARSD College, University of Delhi (South Campus), New Delhi-110021, India;
    c School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
  • Received:2013-06-21 Revised:2013-08-19 Online:2013-12-12 Published:2013-12-12
  • Contact: Sonam Mahajan E-mail:sonammahajan1987@gmail.com
  • About author:03.75.Kk; 03.75.Lm; 03.65.Ta; 03.75.-b

摘要: We investigate the effects of dynamical Casimir effect in superradiant light scattering by Bose–Einstein condensate in an optomechanical cavity. The system is studied using both classical and quantized mirror motions. The cavity frequency is harmonically modulated in time for both the cases. The main quantity of interest is the number of intracavity scattered photons. The system has been investigated under the weak and strong modulations. It has been observed that the amplitude of the scattered photons is more for the classical mirror motion than the quantized mirror motion. Also, initially, the amplitude of scattered photons is high for lower modulation amplitude than higher modulation amplitude. We also found that the behavior of the plots are similar under strong and weak modulations for the quantized mirror motion.

关键词: Bose–, Einstein condensates, dynamical Casimir effect, superradiant light scattering, optomechanical cavity

Abstract: We investigate the effects of dynamical Casimir effect in superradiant light scattering by Bose–Einstein condensate in an optomechanical cavity. The system is studied using both classical and quantized mirror motions. The cavity frequency is harmonically modulated in time for both the cases. The main quantity of interest is the number of intracavity scattered photons. The system has been investigated under the weak and strong modulations. It has been observed that the amplitude of the scattered photons is more for the classical mirror motion than the quantized mirror motion. Also, initially, the amplitude of scattered photons is high for lower modulation amplitude than higher modulation amplitude. We also found that the behavior of the plots are similar under strong and weak modulations for the quantized mirror motion.

Key words: Bose–Einstein condensates, dynamical Casimir effect, superradiant light scattering, optomechanical cavity

中图分类号:  (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)

  • 03.75.Kk
03.75.Lm (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations) 03.65.Ta (Foundations of quantum mechanics; measurement theory)