Spin–orbit coupled Bose–Einstein condensates with Rydberg-dressing interaction  

作　　者：吕昊 朱少兵 钱军 王育竹 

机构地区：[1]Key Laboratory for Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第9期130-134,共5页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2011CB921504);the National Natural Science Foundation of China(Grant No.11104292)

摘　　要：Interaction between Rydberg atoms can be used to control the properties of interatomic interaction in ultracold gases by weakly dressing the atoms with a Rydberg state. Here we investigate the effect of the Rydberg-dressing interaction on the ground-state properties of a Bose–Einstein condensate imposed by Raman-induced spin–orbit coupling. We find that,in the case of SU（2）-invariant s-wave interactions, the gas is only in the plane-wave phase and the zero-momentum phase is absent. In particular, we also predict an unexpected magnetic stripe phase composed of two plane-wave components with unequal weight when s-wave interactions are non-symmetric, which originates from the Rydberg-dressing interaction.Interaction between Rydberg atoms can be used to control the properties of interatomic interaction in ultracold gases by weakly dressing the atoms with a Rydberg state. Here we investigate the effect of the Rydberg-dressing interaction on the ground-state properties of a Bose–Einstein condensate imposed by Raman-induced spin–orbit coupling. We find that,in the case of SU（2）-invariant s-wave interactions, the gas is only in the plane-wave phase and the zero-momentum phase is absent. In particular, we also predict an unexpected magnetic stripe phase composed of two plane-wave components with unequal weight when s-wave interactions are non-symmetric, which originates from the Rydberg-dressing interaction.

关 键 词：Bose–Einstein condensation spin–orbit coupling Rydberg-dressing gas quantum phase transition 

分 类 号：O469[理学—凝聚态物理]