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Correlated dynamics of a Rabi oscillation and a quantum tunneling in coupled quantum dots

We couple the Rabi oscillation in a double quantum dot (DQD) with the quantum tunneling in another DQD by Coulomb interaction between the neighboring dots. Such a coupling leads to correlation of the Rabi oscillating electron and the quantum tunneling one, and gives a tendency of synchronizing them... Full description

Journal Title: Physica. E Low-dimensional systems & nanostructures, 2015-08, Vol.72, p.53-57
Main Author: Xie, Weidong
Other Authors: Chu, Bingxin , Duan, Suqing , Xie, Yan , Chu, Weidong , Yang, Ning , Zhao, Xian-Geng
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Elsevier B.V
ID: ISSN: 1386-9477
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recordid: cdi_gale_infotracacademiconefile_A421355497
title: Correlated dynamics of a Rabi oscillation and a quantum tunneling in coupled quantum dots
format: Article
creator:
  • Xie, Weidong
  • Chu, Bingxin
  • Duan, Suqing
  • Xie, Yan
  • Chu, Weidong
  • Yang, Ning
  • Zhao, Xian-Geng
subjects:
  • Correlated dyanmics
  • Quantum dots
  • Quantum tunneling
  • Rabi oscillation
ispartof: Physica. E, Low-dimensional systems & nanostructures, 2015-08, Vol.72, p.53-57
description: We couple the Rabi oscillation in a double quantum dot (DQD) with the quantum tunneling in another DQD by Coulomb interaction between the neighboring dots. Such a coupling leads to correlation of the Rabi oscillating electron and the quantum tunneling one, and gives a tendency of synchronizing them under appropriate Rabi frequency ΩR and tunneling rate Tc. The correlated oscillation is shown clearly in the tunneling current. As ΩR=Tc, the Rabi oscillation and the quantum tunneling reach their strongest correlation and the two electrons finish their complete transitions simultaneously. And then, a single optical signal accomplishes a gang control of two electrons. This result encourages superior design of two-qubit quantum gates based on correlated DQDs. •We couple a Rabi oscillating electron and a quantum tunneling one in a four-quantum-dot system.•We show the correlated dynamics of Rabi oscillation and quantum tunneling.•We reveal that the Rabi oscillation and the quantum tunneling can be synchronized under specific condition.•We propose a possible way to accomplish a gang control of two electrons by a single optical signal.
language: eng
source:
identifier: ISSN: 1386-9477
fulltext: no_fulltext
issn:
  • 1386-9477
  • 1873-1759
url: Link


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titleCorrelated dynamics of a Rabi oscillation and a quantum tunneling in coupled quantum dots
creatorXie, Weidong ; Chu, Bingxin ; Duan, Suqing ; Xie, Yan ; Chu, Weidong ; Yang, Ning ; Zhao, Xian-Geng
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descriptionWe couple the Rabi oscillation in a double quantum dot (DQD) with the quantum tunneling in another DQD by Coulomb interaction between the neighboring dots. Such a coupling leads to correlation of the Rabi oscillating electron and the quantum tunneling one, and gives a tendency of synchronizing them under appropriate Rabi frequency ΩR and tunneling rate Tc. The correlated oscillation is shown clearly in the tunneling current. As ΩR=Tc, the Rabi oscillation and the quantum tunneling reach their strongest correlation and the two electrons finish their complete transitions simultaneously. And then, a single optical signal accomplishes a gang control of two electrons. This result encourages superior design of two-qubit quantum gates based on correlated DQDs. •We couple a Rabi oscillating electron and a quantum tunneling one in a four-quantum-dot system.•We show the correlated dynamics of Rabi oscillation and quantum tunneling.•We reveal that the Rabi oscillation and the quantum tunneling can be synchronized under specific condition.•We propose a possible way to accomplish a gang control of two electrons by a single optical signal.
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languageeng
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subjectCorrelated dyanmics ; Quantum dots ; Quantum tunneling ; Rabi oscillation
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jtitlePhysica. E, Low-dimensional systems & nanostructures
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abstractWe couple the Rabi oscillation in a double quantum dot (DQD) with the quantum tunneling in another DQD by Coulomb interaction between the neighboring dots. Such a coupling leads to correlation of the Rabi oscillating electron and the quantum tunneling one, and gives a tendency of synchronizing them under appropriate Rabi frequency ΩR and tunneling rate Tc. The correlated oscillation is shown clearly in the tunneling current. As ΩR=Tc, the Rabi oscillation and the quantum tunneling reach their strongest correlation and the two electrons finish their complete transitions simultaneously. And then, a single optical signal accomplishes a gang control of two electrons. This result encourages superior design of two-qubit quantum gates based on correlated DQDs. •We couple a Rabi oscillating electron and a quantum tunneling one in a four-quantum-dot system.•We show the correlated dynamics of Rabi oscillation and quantum tunneling.•We reveal that the Rabi oscillation and the quantum tunneling can be synchronized under specific condition.•We propose a possible way to accomplish a gang control of two electrons by a single optical signal.
pubElsevier B.V
doi10.1016/j.physe.2015.04.019