Density-dependent synthetic gauge fields using periodically modulated interactions.
Density-dependent synthetic gauge fields using periodically modulated interactions.
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DOI：
10.1103/physrevlett.113.215303
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发表时间：
2013-11
影响因子：
8.6
通讯作者：
S. Greschner;G. Sun;D. Poletti;L. Santos
中科院分区：
文献类型：
--
作者：
S. Greschner;G. Sun;D. Poletti;L. Santos
我们表明，密度相关的合成规范场可以通过结合周期性调制的相互作用和拉曼辅助跳跃自旋相关的光学晶格。这些领域导致的动量分布的密度依赖性的转变，可能会引起超流莫特绝缘体的转变，并强烈修改超流制度的相关性。我们发现，所创建的规范场和破碎的亚晶格对称性的结果之间的相互作用，以及，在一个有趣的行为消失的相互作用，其特征在于由一个分数莫特绝缘体的外观。
We show that density-dependent synthetic gauge fields may be engineered by combining periodically modulated interactions and Raman-assisted hopping in spin-dependent optical lattices. These fields lead to a density-dependent shift of the momentum distribution, may induce superfluid-to-Mott insulator transitions, and strongly modify correlations in the superfluid regime. We show that the interplay between the created gauge field and the broken sublattice symmetry results, as well, in an intriguing behavior at vanishing interactions, characterized by the appearance of a fractional Mott insulator.