Open AccessLarge-deviation analysis for counting statistics in double-dot Aharonov-Bohm interferometer
Author(s) -
Jun Li,
Yu Liu,
Ping Jing,
Yin Yin,
Xinqi Li
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
ISSN - 1000-3290
DOI - 10.7498/aps.61.137202
Subject(s) - physics , interferometry , coherence (philosophical gambling strategy) , coupling (piping) , interference (communication) , standard deviation , coulomb , coherence length , quantum dot , statistical physics , quantum mechanics , channel (broadcasting) , statistics , telecommunications , superconductivity , mechanical engineering , mathematics , computer science , engineering , electron
The Coulomb correlation and quantum coherence in a double-dot Aharonov-Bohm interferometer can result in two distinct transport channels: a fast channel and a slow one, while their coupling is tunable by changing the magnetic flux passing through an interference loop. However, these effects cannot be manifested by the conventional transport current. In this work, employing the large-deviation method which was originally developed in the nonequilibrium statistical mechanics, we perform a large-deviation analysis for the transport through this double-dot interferometer system and reveal a clear dynamical phase transition behavior.