Interference of quantum channels

Oi, Daniel K.L. (2003) Interference of quantum channels. Physical Review Letters, 91 (6). 067902. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.91.067902)

Abstract

We show how interferometry can be used to characterize certain aspects of general quantum processes and, in particular, the coherence of completely positive maps. We derive a measure of coherent fidelity, the maximum interference visibility, and the closest unitary operator to a given physical process under this measure.

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• Item metadata

  Item type:	Article
  ID code:	10154
  Dates:	Date Event 8 August 2003 Published
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Strathprints Administrator
  Date deposited:	27 Oct 2011 19:05
  Last modified:	08 Apr 2024 16:31
  URI:	https://strathprints.strath.ac.uk/id/eprint/10154