2003/12/31 by Marco Pala, Marco G. Pala, Giuseppe Iannaccone · 24 citations
Computer Science · Physics and Astronomy · #Dephasing #Formalism (music) #Mesoscopic physics #Physics #Quantum Information and Cryptography #Quantum chaos and dynamical systems #Quantum mechanics #Quantum optics and atomic interactions #Scattering #Statistical physics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.69.235304
published in Physical Review B 69(23) (American Physical Society) · 6 pages, 6 figures
openalex publication_date 2004/06/03 · arxiv created 2004/06/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We propose a phenomenological model of dephasing in mesoscopic transport, based on the introduction of random-phase fluctuations in the computation of the scattering matrix of the system. A Monte Carlo averaging procedure allows us to extract electrical and microscopic device properties. We show that, in this picture, scattering matrix properties enforced by current conservation and time-reversal invariance still hold. In order to assess the validity of the proposed approach, we present simulations of conductance and magnetoconductance of Aharonov-Bohm rings that reproduce the behavior observed in experiments, in particular as far as aspects related to decoherence are concerned.