Coupled Collective and Rabi Oscillations Triggered by Electron Transport through a Photon Cavity

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• 作者：Vidar Gudmundsson ; Anna Sitek ; Pei-yi Lin ; Nzar Rauf Abdullah ; Chi-Shung Tang ; Andrei Manolescu
• 刊名：ACS Photonics
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：2
• 期：7
• 页码：930-934
• 全文大小：512K
• ISSN：2330-4022

文摘

We show how the switching on of electron transport through a system of two parallel quantum dots embedded in a short quantum wire in a photon cavity can trigger coupled Rabi and collective electron鈥損hoton oscillations. We select the initial state of the system to be an eigenstate of the closed system containing two Coulomb-interacting electrons with possibly few photons of a single cavity mode. The many-level quantum dots are described by a continuous potential. The Coulomb interaction and the para- and diamagnetic electron鈥損hoton interactions are treated by exact diagonalization in a truncated Fock space. To identify the collective modes, the results are compared for an open and a closed system with respect to the coupling to external electron reservoirs, or leads. We demonstrate that the vacuum Rabi oscillations can be seen in transport quantities as the current in and out of the system.