Nonlinear dissipative dynamics of a two-component atomic condensate coupling with a continuum

doi:10.1088/1674-1056/23/2/020314

Abstract We investigate the nonlinear dissipative coherence bifurcation and population dynamics of a two-component atomic Bose–Einstein condensate coupling with a continuum. The coupling between the two-component condensates and the continuum brings effective dissipations to the two-component condensates. The steady states and the coherence bifurcation depend on both dissipation and the nonlinear interaction between condensed atoms. The coherence among condensed atoms may be even enhanced by the effective dissipations. The combination of dissipation and nonlinearity allows one to control the switching between different self-trapped states or the switching between a self-trapped state and a non-self-trapped state.

Keywords: Bose–Einstein condensate nonlinear dynamics quantum tunneling open quantum system

Received: 27 April 2013
Revised: 24 June 2013
Accepted manuscript online:

PACS:	03.75.Kk	(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
	03.75.Gg	(Entanglement and decoherence in Bose-Einstein condensates)
	03.75.Lm	(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
	05.30.Jp	(Boson systems)

Fund: Project supported by the National Basic Research and Development Program of China (Grant No. 2012CB821305), the National Natural Science Foundation of China (Grant Nos. 11075223, 11147021, 10905019, and 11175064), the Program for Changjiang Scholars and Innovative Research Team in University (Grant No. IRT0964), the Natural Science Foundation of Hunan Province, China (Grant No. 12JJ4010), the Program for New Century Excellent Talents in University (Grant No. NCET-10-0850), and the Ph. D. Programs Foundation of the Ministry of Education of China (Grant No. 20120171110022).

Corresponding Authors: Zhong Hong-Hua
E-mail: hhzhong115@163.com

About author: 03.75.Kk; 03.75.Gg; 03.75.Lm; 05.30.Jp

Cite this article:

Zhong Hong-Hua (钟宏华), Xie Qiong-Tao (谢琼涛), Xu Jun (徐军), Hai Wen-Hua (海文华), Li Chao-Hong (李朝红) Nonlinear dissipative dynamics of a two-component atomic condensate coupling with a continuum 2014 Chin. Phys. B 23 020314

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Nonlinear dissipative dynamics of a two-component atomic condensate coupling with a continuum

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