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Non-equilibrium disordered Bose gases: condensation, superfluidity and dynamical Bose glass
Chen, Lei; Liang, Zhaoxin; Hu, Ying; Zhang, Zhidong; zhxliang@imr.ac.cn
2016
发表期刊JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN0953-4075
卷号49期号:2页码:-
摘要In an equilibrium three-dimensional (3D) disordered condensate, it is well established that disorder can generate an amount of normal fluid rho(n) equaling to 4/3 of rho(ex), where rho(ex) is a sum of interaction-induced quantum depletion and disorder-induced condensate deformation. The concept that the superfluid is more volatile to the existence of disorder than the condensate is crucial to the understanding of the Bose glass phase. In this work, we show that, by bringing a weakly disordered 3D condensate to non-equilibrium regime via a quantum quench in the interaction, disorder can destroy superfluid significantly more, leading to a steady state of Hamiltonian H-f in which the rho(n) far exceeds 4/3 of the rho(ex). This suggests the possibility of engineering Bose glass in the dynamic regime. Here, we refer to the dynamical Bose glass as the case where in the steady state of quenched condensate, the superfluid density goes to zero while the condensate density remains finite. As both the rho(n) and rho(ex) are measurable quantities, our results allow an experimental demonstration of the dramatized interplay between the disorder and interaction in the non-equilibrium scenario.
部门归属[chen, lei ; liang, zhaoxin ; zhang, zhidong] chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china ; [hu, ying] austrian acad sci, inst quantum opt & quantum informat, a-6020 innsbruck, austria
关键词Condensate Density And Superfluid Density Disordered Bose Gas Non-equilibrium Dynamics
资助者NSF of China [11004200, 11274315]; Youth Innovation Promotion Association CAS; Institut fur Quanteninformation GmbH
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75025
专题中国科学院金属研究所
通讯作者zhxliang@imr.ac.cn
推荐引用方式
GB/T 7714
Chen, Lei,Liang, Zhaoxin,Hu, Ying,et al. Non-equilibrium disordered Bose gases: condensation, superfluidity and dynamical Bose glass[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2016,49(2):-.
APA Chen, Lei,Liang, Zhaoxin,Hu, Ying,Zhang, Zhidong,&zhxliang@imr.ac.cn.(2016).Non-equilibrium disordered Bose gases: condensation, superfluidity and dynamical Bose glass.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,49(2),-.
MLA Chen, Lei,et al."Non-equilibrium disordered Bose gases: condensation, superfluidity and dynamical Bose glass".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 49.2(2016):-.
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