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Unconventional Josephson Signatures of Majorana Bound States
被引:145
|作者:
Jiang, Liang
[1
]
Pekker, David
[1
]
Alicea, Jason
[2
]
Refael, Gil
[1
]
Oreg, Yuval
[3
]
von Oppen, Felix
[4
,5
]
机构:
[1] CALTECH, Dept Phys, Pasadena, CA 91125 USA
[2] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[3] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel
[4] Free Univ Berlin, Dahlem Ctr Complex Quantum Syst, D-14195 Berlin, Germany
[5] Free Univ Berlin, Fachbereich Phys, D-14195 Berlin, Germany
关键词:
TOPOLOGICAL QUANTUM COMPUTATION;
SUPERCONDUCTORS;
ANYONS;
D O I:
10.1103/PhysRevLett.107.236401
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
A junction between two topological superconductors containing a pair of Majorana fermions exhibits a "fractional" Josephson effect, 4 pi periodic in the superconductors' phase difference. An additional fractional Josephson effect, however, arises when the Majorana fermions are spatially separated by a superconducting barrier. This new term gives rise to a set of Shapiro steps which are essentially absent without Majorana modes and therefore provides a unique signature for these exotic states.
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