Generic New Platform for Topological Quantum Computation Using Semiconductor Heterostructures

Phys. Rev. Lett. 104, 040502 – Published 27 January 2010
Jay D. Sau, Roman M. Lutchyn, Sumanta Tewari, and S. Das Sarma

Abstract

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.

DOI: http://dx.doi.org/10.1103/PhysRevLett.104.040502

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  • Received 17 July 2009
  • Published 27 January 2010

© 2010 The American Physical Society

Authors & Affiliations

Jay D. Sau1, Roman M. Lutchyn1, Sumanta Tewari1,2, and S. Das Sarma1

  • 1Condensed Matter Theory Center and Joint Quantum Institute, Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA
  • 2Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USA

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