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

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

中国物理B ›› 2014, Vol. 23 ›› Issue (2): 20314-020314.doi: 10.1088/1674-1056/23/2/020314

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

钟宏华^{a b}, 谢琼涛^{b c}, 徐军^b, 海文华^c, 李朝红^b

a Department of Physics, Jishou University, Jishou 416000, China;
b State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;
c Department of Physics and Key Laboratory of Low-Dimensional Quantum Structure and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081, China

收稿日期:2013-04-27 修回日期:2013-06-24 出版日期:2013-12-12 发布日期:2013-12-12
基金资助:
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).

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

Zhong Hong-Hua (钟宏华)^{a b}, Xie Qiong-Tao (谢琼涛)^{b c}, Xu Jun (徐军)^b, Hai Wen-Hua (海文华)^c, Li Chao-Hong (李朝红)^b

a Department of Physics, Jishou University, Jishou 416000, China;
b State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;
c Department of Physics and Key Laboratory of Low-Dimensional Quantum Structure and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081, China

Received:2013-04-27 Revised:2013-06-24 Online:2013-12-12 Published:2013-12-12
Contact: Zhong Hong-Hua E-mail:hhzhong115@163.com
About author:03.75.Kk; 03.75.Gg; 03.75.Lm; 05.30.Jp
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: Bose–, Einstein condensate, nonlinear dynamics, quantum tunneling, open quantum system

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.

Key words: Bose–Einstein condensate, nonlinear dynamics, quantum tunneling, open quantum system

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

03.75.Kk

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)

钟宏华, 谢琼涛, 徐军, 海文华, 李朝红. Nonlinear dissipative dynamics of a two-component atomic condensate coupling with a continuum[J]. 中国物理B, 2014, 23(2): 20314-020314.

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[J]. Chin. Phys. B, 2014, 23(2): 20314-020314.

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

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

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