Electroluminescence Caused by the Transport of Interacting Electrons through Parallel Quantum Dots in a Photon Cavity

• Published in: Annalen der Physik
• Main Authors: Gudmundsson, Vidar, Abdullah, Nzar, Sitek, Anna, Goan, Hsi-Sheng, Tang, Chi-Shung, Manolescu, Andrei
• Other Authors: Raunvísindastofnun (HÍ), Science Institute (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, University of Iceland
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley-Blackwell 2017
• Subjects: Eðlisfræði; Skammtafræði; Öreindir; Iceland
• Online Access: https://hdl.handle.net/20.500.11815/673; https://doi.org/10.1002/andp.201700334

This work was financially supported by the Research Fund of the University of Iceland, the Icelandic Research Fund, grant no. 163082-051, and the Icelandic Instruments Fund. HSG acknowledges support from Ministry of Science and Technology of Taiwan, under grant no. 103-2112-M-002-003-MY3. We show that a Rabi-splitting of the states of strongly interacting electrons in parallel quantum dots embedded in a short quantum wire placed in a photon cavity can be produced by either the para- or the dia-magnetic electron-photon interactions when the geometry of the system is properly accounted for and the photon field is tuned close to a resonance with the electron system. We use these two resonances to explore the electroluminescence caused by the transport of electrons through the one- and two-electron ground states of the system and their corresponding conventional and vacuum electroluminescense as the central system is opened up by coupling it to external leads acting as electron reservoirs. Our analysis indicates that high-order electron-photon processes are necessary to adequately construct the cavity-photon dressed electron states needed to describe both types of electroluminescence.