Advertisement

Relation Between Dephasing and Renormalization Phenomena in Quantum Two-Level Systems

  • A. Shnirman
  • G. Schön

Abstract

We observe that experimental conditions, for example, details of the initial state preparation, determine to what extent the environment leads to dephasing or to renormalization effects. We analyze an exactly solvable limit of the spin-boson model where the relation between both can be demonstrated explicitly.

Keywords

Tunnel Junction Dephasing Rate Pure Dephasing Initial Density Matrix Renormalization Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    A. Leggett, S. Chakravarty, A. Dorsey, M. Fisher, A. Garg, and W. Zwcrgcr, Dynamics of the dissipative two-state system, Rev. Mod. Phys. 59, 1 (1987).ADSCrossRefGoogle Scholar
  2. [2]
    U. Weiss, Quantum Dissipative Systems (Singapore: World Scientific, 2nd edition).Google Scholar
  3. [3]
    H. Schoeller and G. Schön, Mesoscopic quantum transport: resonant tunneling in the presence of strong Coulomb interaction, Phys. Rev. B 50, 18436 (1994).ADSGoogle Scholar
  4. [4]
    S. V. Panyukov and A. D. Zaikin, Quantum fluctuations and quantum dynamics of small Josephson junctions, J. Low Temp. Phys. 73, 1 (1988).ADSCrossRefGoogle Scholar
  5. [5]
    A. A. Odintsov, Effect of dissipation on the characteristics of small-area tunnel junctions: application of the polaron model, Sov. Phys. JETP 67, 1265 (1988).Google Scholar
  6. [6]
    Yu. V. Nazarov, Anomalous current-voltage characteristics of tunnel junctions, Sov. Phys. JETP 68, 561 (1989).Google Scholar
  7. [7]
    M. H. Devoret, D. Esteve, H. Grabert, G. L. Ingold, and H. Pothier, Effect of the electromagnetic environment on the Coulomb blockade in ultrasmall tunnel junctions, Phys. Rev. Lett. 64, 1824 (1990).ADSCrossRefGoogle Scholar
  8. [8]
    W. G. Unruh, Maintaining coherence in quantum computers, Phys. Rev. A 51, 992 (1995).MathSciNetADSGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • A. Shnirman
    • 1
  • G. Schön
    • 1
    • 2
  1. 1.Institut für Theoretische FestkörperphysikUniversität KarlsruheKarlsruheGermany
  2. 2.Forschungszentrum KarlsruheInstitut für NanotechnologieKarlsruheGermany

Personalised recommendations