Cold bosonic atoms in optical lattices
Cold bosonic atoms in optical lattices
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DOI：
10.1103/physrevlett.81.3108
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发表时间：
1998-10-12
影响因子：
8.6
通讯作者：
Zoller, P
中科院分区：
文献类型：
--
作者：
Jaksch, D;Bruder, C;Zoller, P
光学晶格中玻色原子组成的超冷稀薄气体的动力学可以用玻色-哈伯德模型来描述，其中系统参数由激光控制。我们研究的连续（零温度）量子相变从超流到莫特绝缘体相诱导的不同深度的光学势，其中莫特绝缘体相对应于一个相称的填充的晶格（“光学晶体”）。给出了在具有叠加谐波陷阱的光学晶格和光学超晶格中形成莫特结构的例子。[S0031-9007（98）07267-6]。
The dynamics of an ultracold dilute gas of bosonic atoms in an optical lattice can be described by a Bose-Hubbard model where the system parameters are controlled by laser light. We study the continuous (zero temperature) quantum phase transition from the superfluid to the Mott insulator phase induced by varying the depth of the optical potential, where the Mott insulator phase corresponds to a commensurate filling of the lattice ("optical crystal"). Examples for formation of Mott structures in optical lattices with a superimposed harmonic trap and in optical superlattices are presented. [S0031-9007(98)07267-6].