Opening-assisted coherent transport in the semiclassical regime

Fausto Borgonovi, Giuseppe Celardo, Yang Zhang, Lev Kaplan

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

We study quantum enhancement of transport in open systems in the presence of disorder and dephasing. Quantum coherence effects may significantly enhance transport in open systems even in the semiclassical regime (where the decoherence rate is greater than the intersite hopping amplitude), as long as the disorder is sufficiently strong. When the strengths of disorder and dephasing are fixed, there is an optimal opening strength at which the coherent transport enhancement is optimized. Analytic results are obtained in two simple paradigmatic tight-binding models of large systems: the linear chain and the fully connected network. The physical behavior is also reflected in the Fenna-Matthews-Olson (FMO) photosynthetic complex, which may be viewed as intermediate between these paradigmatic models.
Original languageEnglish
Pages (from-to)022122-022134
Number of pages13
JournalPHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS
Volume95
DOIs
Publication statusPublished - 2017

Keywords

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • open quantum systems
  • quantum transport

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