Spin-Orbit-Coupled Interferometry with Ring-Trapped Bose-Einstein Condensates.
Spin-Orbit-Coupled Interferometry with Ring-Trapped Bose-Einstein Condensates.
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DOI：
10.1103/physrevlett.120.063201
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发表时间：
2017-01
影响因子：
8.6
通讯作者：
John L. Helm;T. Billam;A. Rakonjac;S. Cornish;Simon A. Gardiner
中科院分区：
文献类型：
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作者：
John L. Helm;T. Billam;A. Rakonjac;S. Cornish;Simon A. Gardiner
我们提出了一种使用旋量玻色-爱因斯坦凝聚体和时变磁场作为相干分束器的原子干涉测量方法。我们的协议创建了长寿命的叠加逆流态，这是基本感兴趣的，并且可以使其对亚μG尺度上的萨格纳克效应和磁场敏感。我们将初始处于m{f}=0超精细态的环捕获凝聚态分裂为内部m{f}=±1态和凝聚态超流的叠加，它们是自旋-轨道耦合的。经过询问，可以从布居转移到m{f}=±1态来推断相对位相积累。逆流产生协议是绝热确定性的，不依赖于耦合到额外的光场或机械搅拌技术。我们的协议可以在任何旋转、磁场或询问时间内最大化经典的Fisher信息，因此具有对不相关粒子的最大灵敏度。精确度可以随着询问时间的延长而增加，因此仅受凝析油寿命的限制。
We propose a method of atom interferometry using a spinor Bose-Einstein condensate with a time-varying magnetic field acting as a coherent beam splitter. Our protocol creates long-lived superpositional counterflow states, which are of fundamental interest and can be made sensitive to both the Sagnac effect and magnetic fields on the sub-μG scale. We split a ring-trapped condensate, initially in the m_{f}=0 hyperfine state, into superpositions of internal m_{f}=±1 states and condensate superflow, which are spin-orbit coupled. After interrogation, the relative phase accumulation can be inferred from a population transfer to the m_{f}=±1 states. The counterflow generation protocol is adiabatically deterministic and does not rely on coupling to additional optical fields or mechanical stirring techniques. Our protocol can maximize the classical Fisher information for any rotation, magnetic field, or interrogation time and so has the maximum sensitivity available to uncorrelated particles. Precision can increase with the interrogation time and so is limited only by the lifetime of the condensate.