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Large-deviation analysis for counting statistics in double-dot Aharonov-Bohm interferometer

Li Jun Liu Yu Ping Jing Ye Yin Li Xin-Qi

Large-deviation analysis for counting statistics in double-dot Aharonov-Bohm interferometer

Li Jun, Liu Yu, Ping Jing, Ye Yin, Li Xin-Qi
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  • Abstract views:  2113
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  • Received Date:  01 November 2011
  • Accepted Date:  26 November 2011
  • Published Online:  05 July 2012

Large-deviation analysis for counting statistics in double-dot Aharonov-Bohm interferometer

  • 1. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
  • 2. Department of Physics, Beijing Normal University, Beijing 100875, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 101202101, 10874176), and the National Basic Research Program of China (Grant Nos. 2011CB808502, 2012CB932704).

Abstract: 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.

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