Unpaired Majorana fermions in quantum wires

  title={Unpaired Majorana fermions in quantum wires},
  author={A. Kitaev},
  • A. Kitaev
  • Published 2000
  • Physics
  • Physics-Uspekhi
  • Certain one-dimensional Fermi systems have an energy gap in the bulk spectrum while boundary states are described by one Majorana operator per boundary point. A finite system of length L possesses two ground states with an energy difference proportional to exp(-L/l0) and different fermionic parities. Such systems can be used as qubits since they are intrinsically immune to decoherence. The property of a system to have boundary Majorana fermions is expressed as a condition on the bulk electron… CONTINUE READING
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