Decoherence and disorder in quantum walks

From ballistic spread to localization

A. Schreiber, K. N. Cassemiro, V. Potoček, A. Gábris, I. Jex, C. H. Silberhorn

Research output: Contribution to journalArticle

187 Citations (Scopus)

Abstract

We investigate the impact of decoherence and static disorder on the dynamics of quantum particles moving in a periodic lattice. Our experiment relies on the photonic implementation of a one-dimensional quantum walk. The pure quantum evolution is characterized by a ballistic spread of a photon's wave packet along 28 steps. By applying controlled time-dependent operations we simulate three different environmental influences on the system, resulting in a fast ballistic spread, a diffusive classical walk, and the first Anderson localization in a discrete quantum walk architecture.

Original languageEnglish
Article number180403
JournalPhysical Review Letters
Volume106
Issue number18
DOIs
Publication statusPublished - May 6 2011

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ballistics
disorders
wave packets
photonics
photons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Decoherence and disorder in quantum walks : From ballistic spread to localization. / Schreiber, A.; Cassemiro, K. N.; Potoček, V.; Gábris, A.; Jex, I.; Silberhorn, C. H.

In: Physical Review Letters, Vol. 106, No. 18, 180403, 06.05.2011.

Research output: Contribution to journalArticle

Schreiber, A. ; Cassemiro, K. N. ; Potoček, V. ; Gábris, A. ; Jex, I. ; Silberhorn, C. H. / Decoherence and disorder in quantum walks : From ballistic spread to localization. In: Physical Review Letters. 2011 ; Vol. 106, No. 18.
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