Adiabatic preparation of vortex lattices
Adiabatic preparation of vortex lattices
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DOI：
10.1103/physreva.88.033603
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发表时间：
2013-06
影响因子：
2.9
通讯作者：
S. Baur;N. Cooper
中科院分区：
文献类型：
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作者：
S. Baur;N. Cooper
通过设计适当的人工规范势，玻色-爱因斯坦凝聚体可以绝热地加载到载流状态，类似于旋转的均匀玻色气体的涡旋晶格。我们给出了两个显式的、在实验上可行的协议，通过这两个协议，可以从最初静止的凝聚体平滑地形成涡旋晶格。在第一个例子中，我们展示了如何通过绝热地将均匀的BEC加载到由原子内态的相干光学耦合形成的光通量晶格中来实现这一点。在第二个例子中，我们研究了在参数空间中连续操作的紧结合模型，使得它平滑地转换为每个斑块具有1/3通量的Harper-Hofstadter模型。
By engineering appropriate artificial gauge potentials, a Bose-Einstein condensate can be adiabatically loaded into a current carrying state that resembles a vortex lattice of a rotating uniform Bose gas. We give two explicit, experimentally feasible protocols by which vortex lattices can be smoothly formed from a condensate initially at rest. In the first example we show how this can be achieved by adiabatically loading a uniform BEC into an optical flux lattice, formed from coherent optical coupling of internal states of the atom. In the second example we study a tight binding model that is continuously manipulated in parameter space such that it smoothly transforms into the Harper-Hofstadter model with 1/3 flux per plaquette.