Testable signatures of quantum nonlocality in a two-dimensional chiral p-wave superconductor

被引：90

作者：

Tewari, Sumanta ^{[1
]}

Zhang, Chuanwei ^{[1
]}

Das Sarma, S. ^{[1
]}

Nayak, Chetan ^{[2
,3
]}

Lee, Dung-Hai ^{[4
,5
]}

机构：

[1] Univ Maryland, Condensed Matter Theory Ctr, Dept Phys, College Pk, MD 20742 USA

[2] Univ Calif Santa Barbara, Microsoft Stn Q, Santa Barbara, CA 93108 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[5] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.027001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A class of topological excitations-the odd-winding number vortices-in a spinless 2D chiral p-wave (p(x)+ip(y)) superconductor traps Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy fermionic eigenstates are intrinsically nonlocal. We predict two testable signatures of this unusual quantum nonlocality in quasiparticle tunneling experiments. We discuss why the associated teleportationlike phenomenon does not imply the violation of causality.

引用

页数：4

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