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Observation of Two-Dimensional Mott Insulator and π-Superfluid Quantum Phase Transition in Shaking Optical Lattice 下载免费PDF全文
The Mott insulator and superfluid phase transition is one of the most prominent phenomena in ultracold atoms. We report the observation of a novel 2D quantum phase transition between the Mott insulator and πsuperfluid in a shaking optical lattice. In the deep optical lattice regime, the lowest S band can be tuned to Mott phase, while the higher Px,y bands are itinerant for having larger bandwidth. Through a shaking technique coupling the s-orbital to px,y-orbital states, we experimentally observ... 相似文献
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