Frictional quantum decoherence

Bruno Bellomo, Stephen M. Barnett, John Jeffers

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The dynamics associated with a measurement-based master equation for quantum Brownian motion are investigated. A scheme for obtaining time evolution from general initial conditions is derived. This is applied to analyse dissipation and decoherence in the evolution of both a Gaussian and a Schrodinger cat initial state. Dependence on the diffusive terms present in the master equation is discussed with reference to both the coordinate and momentum representations.

LanguageEnglish
Pages9437-9453
Number of pages17
JournalJournal of Physics A: Mathematical and Theoretical
Volume40
Issue number31
DOIs
Publication statusPublished - 3 Aug 2007

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Brownian movement
Decoherence
Master Equation
Momentum
cats
Brownian motion
Dissipation
Initial conditions
dissipation
momentum
Term

Keywords

  • brownian-motion
  • master equation
  • dissipation

Cite this

Bellomo, Bruno ; Barnett, Stephen M. ; Jeffers, John. / Frictional quantum decoherence. In: Journal of Physics A: Mathematical and Theoretical. 2007 ; Vol. 40, No. 31. pp. 9437-9453.
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Frictional quantum decoherence. / Bellomo, Bruno; Barnett, Stephen M.; Jeffers, John.

In: Journal of Physics A: Mathematical and Theoretical, Vol. 40, No. 31, 03.08.2007, p. 9437-9453.

Research output: Contribution to journalArticle

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AU - Bellomo, Bruno

AU - Barnett, Stephen M.

AU - Jeffers, John

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AB - The dynamics associated with a measurement-based master equation for quantum Brownian motion are investigated. A scheme for obtaining time evolution from general initial conditions is derived. This is applied to analyse dissipation and decoherence in the evolution of both a Gaussian and a Schrodinger cat initial state. Dependence on the diffusive terms present in the master equation is discussed with reference to both the coordinate and momentum representations.

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KW - master equation

KW - dissipation

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