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Decoherent quantum walks driven by a generic coin operation

Authors
  • Abal, G.
  • Donangelo, R.
  • Severo, F.
  • Siri, R.
Type
Published Article
Publication Date
Aug 09, 2007
Submission Date
Aug 09, 2007
Identifiers
DOI: 10.1016/j.physa.2007.08.058
Source
arXiv
License
Unknown
External links

Abstract

We consider the effect of different unitary noise mechanisms on the evolution of a quantum walk (QW) on a linear chain with a generic coin operation: (i) bit-flip channel noise, restricted to the coin subspace of the QW, and (ii) topological noise caused by randomly broken links in the linear chain. Similarities and differences in the respective decoherent dynamics of the walker as a function of the probability per unit time of a decoherent event taking place are discussed.

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