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 Lowdimensional systems & nanostructures, 201508, Vol.72, p.5357 
Main Author:  Xie, Weidong 
Other Authors:  Chu, Bingxin , Duan, Suqing , Xie, Yan , Chu, Weidong , Yang, Ning , Zhao, XianGeng 
Format:  Electronic Article 
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English 
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Publisher:  Elsevier B.V 
ID:  ISSN: 13869477 
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title:  Correlated dynamics of a Rabi oscillation and a quantum tunneling in coupled quantum dots 
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ispartof:  Physica. E, Lowdimensional systems & nanostructures, 201508, Vol.72, p.5357 
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 twoqubit quantum gates based on correlated DQDs. •We couple a Rabi oscillating electron and a quantum tunneling one in a fourquantumdot 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 
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identifier:  ISSN: 13869477 
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