Generic New Platform for Topological Quantum Computation Using Semiconductor Heterostructures
Generic New Platform for Topological Quantum Computation Using Semiconductor Heterostructures
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DOI：
10.1103/physrevlett.104.040502
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发表时间：
2010-01-29
影响因子：
8.6
通讯作者：
Das Sarma, S.
中科院分区：
文献类型：
--
作者：
Sau, Jay D.;Lutchyn, Roman M.;Das Sarma, S.
我们表明，薄膜的半导体中的s波超导性和塞曼分裂诱导的邻近效应，支持零能量马约拉纳费米子模式在普通的涡旋激发。由于时间反演对称性被明确打破，薄膜的边缘构成了手性马约拉纳线。我们提出的异质结构夹在s波超导体和磁绝缘体之间的半导体薄膜是一个通用的系统，它可以被用作凭借非阿贝尔马约拉纳费米子的存在的拓扑量子计算的平台。
We show that a film of a semiconductor in which s-wave superconductivity and Zeeman splitting are induced by the proximity effect, supports zero-energy Majorana fermion modes in the ordinary vortex excitations. Since time-reversal symmetry is explicitly broken, the edge of the film constitutes a chiral Majorana wire. The heterostructure we propose-a semiconducting thin film sandwiched between an s-wave superconductor and a magnetic insulator-is a generic system which can be used as the platform for topological quantum computation by virtue of the existence of non-Abelian Majorana fermions.