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

Vidar Gudmundsson*, Anna Sitek, Pei Yi Lin, Nzar Rauf Abdullah, Chi Shung Tang, Andrei Manolescu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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-photon 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-photon 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.

Original languageEnglish
Pages (from-to)930-934
Number of pages5
JournalACS Photonics
Issue number7
Publication statusPublished - 15 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

Other keywords

  • collective oscillations
  • double quantum dots
  • electron transport
  • Rabi oscillations
  • transient


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