2009

A generic new platform for topological quantum computation using semiconductor heterostructures

Sau, Jay D., Lutchyn, Roman M., Tewari, Sumanta et al.

Understand

We show that a film of a semiconductor such as GaAs, in which s-wave superconductivity and a Zeeman splitting are induced by proximity effect, supports zero-energy Majorana fermion modes in the ordinary vortex excitations.

  • The key to the topological order is the existence of spin-orbit coupling, coexisting with proximity-induced s-wave superconductivity.
  • 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.

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Similar

  • P. Bonderson, A. Kitaev, and K. Shtengel, Phys. Rev. Lett. 96

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    Cited alongside, same era.

  • S. Das Sarma, C. Nayak, and S. Tewari, Phys. Rev. B 73

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    Cited alongside, same era.

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    Cited alongside, same era.

  • J. D. Sau, R. Lutchyn, S. Tewari, S. Das Sarma (in preparation)

    Cited in the paper.

Then

  • L. Fu and C. L. Kane, Phys. Rev. Lett. 100

    2008

    Later among the works it cites.

  • J. Nilsson, A. R. Akhmerov, and C. W. J. Beenakker, Phys. Rev. Lett. 101

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    Later among the works it cites.

  • M. Sato, Y. Takahashi, and S. Fujimoto, Phys. Rev. Lett. 103

    2009

    Closest in time.

  • L. Fu and C. L. Kane, Phys. Rev. Lett. 102

    2009

    Closest in time.

  • A. R. Akhmerov, J. Nilsson, and C. W. J. Beenakker, Phys. Rev. Lett. 102

    2009

    Closest in time.

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