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arXiv 1111.1798cond-mat.quant-gas
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自旋-轨道耦合原子费米气体中Majorana费米子的探测

Probing Majorana fermions in spin-orbit coupled atomic Fermi gases

Xia-Ji Liu, Lei Jiang, Han Pu, Hui Hu

摘要:

本文从理论上研究了二维囚禁超冷原子费米气体中Majorana费米子的可视化。通过增加外部塞曼场,被困气体从非拓扑超流体过渡到拓扑超流体,通过混合相,其中两种类型的超流体共存。我们表明,零能量马约拉纳费米子,支持的拓扑超流体和本地化的涡核,是清晰可见的通过(i)核心密度和(ii)局域态密度,这是很容易测量的实验。本文给出了超冷$^{40}$ K原子实验参数的一个实际估计。

英文摘要:

We examine theoretically the visualization of Majorana fermions in a two-dimensional trapped ultracold atomic Fermi gas with spin-orbit coupling. By increasing an external Zeeman field, the trapped gas transits from non-topological to topological superfluid, via a mixed phase in which both types of superfluids coexist. We show that the zero-energy Majorana fermion, supported by the topological superfluid and localized at the vortex core, is clearly visible through (i) the core density and (ii) the local density of states, which are readily measurable in experiment. We present a realistic estimate on experimental parameters for ultracold $^{40}$K atoms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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