Extended JC-Dicke model for two-component atomic BEC inside a cavity |
| |
| Authors: | Y Li P Zhang and Z D Wang |
| |
| Institution: | 1.Department of Physics and Center of Theoretical and Computational Physics,The
University of Hong Kong,Hong Kong,P.R. China;2.ERATO, JST, Macroscopic Quantum Control Project, Hongo, Bunkyo-Ku,
113-8656,Tokyo,Japan |
| |
| Abstract: | We consider a trapped two-component atomic Bose-Einstein condensate (BEC),
where each atom with three energy-levels is coupled to an optical cavity field
and an external classical optical field as well as a microwave field to form
the so-called Δ-type configuration. After adiabatically eliminating the
atomic excited state, an extended JC-Dicke model is derived under the
rotating-wave approximation. The scaled ground-state energy and the phase
diagram of this model Hamiltonian are investigated in the framework of
mean-field approach. A new phase transition is revealed when the amplitude of
microwave field changes its sign. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
