Majorana Fermions in Equilibrium and in Driven Cold-Atom Quantum Wires
Majorana Fermions in Equilibrium and in Driven Cold-Atom Quantum Wires
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DOI：
10.1103/physrevlett.106.220402
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发表时间：
2011-06-02
影响因子：
8.6
通讯作者：
Zoller, Peter
中科院分区：
文献类型：
--
作者：
Jiang, Liang;Kitagawa, Takuya;Zoller, Peter
我们介绍了一种新的方法来创建和检测马约拉纳费米子使用光学捕获的一维费米子原子。在我们提出的设置中，两个内部状态的原子耦合通过光学拉曼过渡，同时诱导一个有效的自旋轨道相互作用和磁场，而背景分子BEC云产生s波配对的原子。由此产生的冷原子量子线支持位于拓扑平凡区域和非平凡区域之间的相边界处的马约拉纳费米子，以及当系统周期性驱动时的“Floquet马约拉纳费米子”。我们分析实验参数，检测方案，和各种缺陷。
We introduce a new approach to create and detect Majorana fermions using optically trapped 1D fermionic atoms. In our proposed setup, two internal states of the atoms couple via an optical Raman transition-simultaneously inducing an effective spin-orbit interaction and magnetic field-while a background molecular BEC cloud generates s-wave pairing for the atoms. The resulting cold-atom quantum wire supports Majorana fermions at phase boundaries between topologically trivial and nontrivial regions, as well as "Floquet Majorana fermions" when the system is periodically driven. We analyze experimental parameters, detection schemes, and various imperfections.