Selective distillation phenomenon in two-species Bose-Einstein condensates in open boundary optical lattices.
Selective distillation phenomenon in two-species Bose-Einstein condensates in open boundary optical lattices.
复制标题
开放边界光学晶格中两种玻色-爱因斯坦凝聚的选择性蒸馏现象
DOI：
10.1038/srep17101
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发表时间：
2015-11-24
影响因子：
4.6
通讯作者：
Deng FG
中科院分区：
文献类型：
--
作者：
Bai XD;Zhang M;Xiong J;Yang GJ;Deng FG
利用离散的非线性薛定谔方程研究了开边界光学晶格中两种玻色-爱因斯坦凝聚体（BEC）混合物的离散呼吸子（DBs）的形成和动力学行为.结果表明，种内和种间相互作用的耦合可以导致纯单种DBs和共生DBs（即，两种DBs）。此外，我们还发现两种BEC混合物的动力学过程中存在选择蒸馏现象。人们可以选择性地从两种BEC的混合物中分离出一种，甚至可以通过调节光学晶格中的种内和种间相互作用来控制优势种的比例。我们的选择性蒸馏机制可能在基于多物种原子的量子信息存储和量子信息处理中有潜在的应用。
We investigate the formation of discrete breathers (DBs) and the dynamics of the mixture of two-species Bose-Einstein condensates (BECs) in open boundary optical lattices using the discrete nonlinear Schrödinger equations. The results show that the coupling of intra- and interspecies interaction can lead to the existence of pure single-species DBs and symbiotic DBs (i.e., two-species DBs). Furthermore, we find that there is a selective distillation phenomenon in the dynamics of the mixture of two-species BECs. One can selectively distil one species from the mixture of two-species BECs and can even control dominant species fraction by adjusting the intra- and interspecies interaction in optical lattices. Our selective distillation mechanism may find potential application in quantum information storage and quantum information processing based on multi-species atoms.