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Conditional photon-assisted transport in coupled quantum dot

We theoretically study the photon-assisted transport (PAT) in a double quantum dot (QD) which is conditionally controlled by the optical excitation in an adjacent QD. Based on a real three-QD model, a double-electron level configuration needed for the conditional PAT is designed. Interesting conditi... Full description

Journal Title: Applied physics letters 2012-04-10, Vol.100 (15), p.153105-153105-4
Main Author: Xie, Yan
Other Authors: Xie, Weidong , Duan, Suqing , Yang, Ning , Chen, Jing , Zhang, Wei , Chu, Weidong , Zhao, Xian-Geng
Format: Electronic Article Electronic Article
Language: English
Publisher: American Institute of Physics
ID: ISSN: 0003-6951
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recordid: cdi_crossref_primary_10_1063_1_3702573
title: Conditional photon-assisted transport in coupled quantum dot
format: Article
creator:
  • Xie, Yan
  • Xie, Weidong
  • Duan, Suqing
  • Yang, Ning
  • Chen, Jing
  • Zhang, Wei
  • Chu, Weidong
  • Zhao, Xian-Geng
ispartof: Applied physics letters, 2012-04-10, Vol.100 (15), p.153105-153105-4
description: We theoretically study the photon-assisted transport (PAT) in a double quantum dot (QD) which is conditionally controlled by the optical excitation in an adjacent QD. Based on a real three-QD model, a double-electron level configuration needed for the conditional PAT is designed. Interesting conditional dynamics are demonstrated for the double QD and its adjacent QD. Depending on various conditional frequencies, the conditional behaviors can be manifested as the current peaks or collapses of the PAT. They correspond to coherent excitations or trapping of double-electron states. Our results present a possible way to optically manipulate electron states and monitor them via the signals of current spectrum.
language: eng
source:
identifier: ISSN: 0003-6951
fulltext: no_fulltext
issn:
  • 0003-6951
  • 1077-3118
url: Link


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descriptionWe theoretically study the photon-assisted transport (PAT) in a double quantum dot (QD) which is conditionally controlled by the optical excitation in an adjacent QD. Based on a real three-QD model, a double-electron level configuration needed for the conditional PAT is designed. Interesting conditional dynamics are demonstrated for the double QD and its adjacent QD. Depending on various conditional frequencies, the conditional behaviors can be manifested as the current peaks or collapses of the PAT. They correspond to coherent excitations or trapping of double-electron states. Our results present a possible way to optically manipulate electron states and monitor them via the signals of current spectrum.
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abstractWe theoretically study the photon-assisted transport (PAT) in a double quantum dot (QD) which is conditionally controlled by the optical excitation in an adjacent QD. Based on a real three-QD model, a double-electron level configuration needed for the conditional PAT is designed. Interesting conditional dynamics are demonstrated for the double QD and its adjacent QD. Depending on various conditional frequencies, the conditional behaviors can be manifested as the current peaks or collapses of the PAT. They correspond to coherent excitations or trapping of double-electron states. Our results present a possible way to optically manipulate electron states and monitor them via the signals of current spectrum.
pubAmerican Institute of Physics
doi10.1063/1.3702573