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Quantum-to-classical crossover in full counting statistics.

Eugene V Sukhorukov1, Oleg M Bulashenko

  • 1Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland.

Physical Review Letters
|May 21, 2005
PubMed
Summary

Quantum scattering reduction suppresses shot noise. This study analyzes the transition from quantum transport with universal shot noise to classical regimes where noise disappears, identifying three crossover scenarios.

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Area of Science:

  • Quantum mechanics
  • Mesoscopic physics
  • Transport phenomena

Background:

  • Shot noise is a fundamental characteristic of quantum transport.
  • Understanding the transition from quantum to classical transport is crucial.
  • Quantum scattering plays a key role in noise suppression.

Purpose of the Study:

  • To analyze the crossover from quantum transport with universal shot noise to the classical regime.
  • To investigate the role of quantum scattering in shot noise suppression.
  • To identify different scenarios of this crossover.

Main Methods:

  • Stochastic path integral approach.
  • Analysis of transport statistics.
  • Characterization of transmission properties in a chaotic cavity.

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Main Results:

  • Identified three distinct scenarios for the crossover from quantum to classical transport.
  • Demonstrated the suppression of shot noise due to reduced quantum scattering.
  • Quantified transport statistics and transmission properties as a function of a control parameter.

Conclusions:

  • The crossover from quantum to classical transport regimes is characterized by specific scenarios.
  • Quantum scattering reduction is a direct mechanism for shot noise suppression.
  • The findings provide insights into noise behavior in mesoscopic systems.