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Loss of quantum coherence in a system coupled to a zero-temperature environment

  • A. Ratchov
  • F. Faure
  • F. W.J. Hekking
Mesoscopic Physics

Abstract.

We discuss the influence of a zero-temperature environment on a coherent quantum system. First, we calculate the reduced density operator of the system in the framework of the well-known, exactly solvable model of an oscillator coupled to a bath of harmonic oscillators. Then, we propose the sketch of an Aharonov–Bohm-like interferometer showing, through interference measurements, the decrease of the coherence length of the system due to the interaction with the environment, even in the zero temperature limit.

Keywords

Spectroscopy Neural Network State Physics Coherence Complex System 
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.

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Authors and Affiliations

  • A. Ratchov
    • 1
  • F. Faure
    • 1
  • F. W.J. Hekking
    • 1
  1. 1.Laboratoire de physique et de modélisation des milieux condensées, Université Joseph Fourier & CNRSCedexFrance

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