Characterizing topological order in superconductors via entanglement
Characterizing topological order in superconductors via entanglement
复制标题
通过纠缠表征超导体的拓扑顺序
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
Eugene H. Kim
中科院分区:
文献类型:
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作者:
Eugene H. Kim
We investigate/characterize topological order in superconducting systems using entanglement. Demonstrating/utilizing the directional dependence of the entanglement, results are shown for two-dimensional dx2−y2 ?> and dx2−y2 ?> +idxy spin-singlet superconductors, comparing the results to those for a spin-polarized px+ipy superconductor; we also discuss the topological properties of a one-dimensional spin-polarized p-wave superconductor threaded by a magnetic flux. In carrying out these investigations, we establish an efficient approach to investigate entanglement in superconductors or, more generally, in quadratic fermionic Hamiltonians with pairing interactions.