Maximal entanglement from quantum random walks

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Alles B., Gunduc S., Gunduc Y.

QUANTUM INFORMATION PROCESSING, vol.11, no.1, pp.211-227, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1007/s11128-011-0240-3
  • Journal Name: QUANTUM INFORMATION PROCESSING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.211-227
  • Hacettepe University Affiliated: Yes

Abstract

The conditions under which entanglement becomes maximal are sought in the general one-dimensional quantum random walk with two walkers. Moreover, a one-dimensional shift operator for the two walkers is introduced and its performance in generating entanglement is analyzed as a function of several free parameters, some of them coming from the shift operator itself and some others from the coin operator. To simplify the investigation an averaged entanglement is defined.