Counteracting quantum decoherence with optimized disorder in discrete-time quantum walks

Irwin Huang, Yu Ping Huang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Decoherence and disorder are two major difficulties limiting the performance of quantum systems in practical settings. Yet they can potentially counteract each other to partially restore the systems' quantum signatures. We adopt the particle swarm optimization method to find the optimal disorder for mitigating the effects of decoherence in one- and two-dimensional quantum random walks, achieving substantial increase in the mean walking distance for a wide range of decoherence strength. This result suggests a viable approach to constructing practical quantum systems robust against decoherence and disorder.

Original languageEnglish
Pages (from-to)1652-1657
Number of pages6
JournalJournal of Modern Optics
Volume66
Issue number16
DOIs
StatePublished - 20 Sep 2019

Keywords

  • Quantum random walk
  • decoherence
  • disorder
  • particle swarm optimization

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