Rabi-resonant and intraband transitions in a multilevel quantum dot system controlled by the cavity-photon reservoir and the electron-photon coupling

• Published in: Results in Physics
• Main Author: Abdullah, Nzar
• Other Authors: Science Institute (UI), Raunvísindastofnun (HÍ), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, University of Iceland
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier BV 2019
• Subjects: Cavity-QED; Electro-optical effects; Quantum dot; Quantum master equation; Quantum transport; Skammtafræði; Skammtaljósfræði; Iceland
• Online Access: https://hdl.handle.net/20.500.11815/1535; https://doi.org/10.1016/j.rinp.2019.102686

Publisher's version (útgefin grein). The transport properties of a wire-dot system coupled to a quantized single photon with linear polarization in a 3D-cavity is theoretically studied using a quantum master equation. The system is also coupled to a photon reservoir, environment. We interplay between the electron-photon coupling, gγ, and the cavity-reservoir coupling, κ, in three cases: κ<gγ, κ=gγ, and κ>gγ. The current peaks due to intraband transitions between the Rabi-resonant states are formed when the electron-photon coupling is dominant, κ<gγ. The broadening of the current peaks depends on the photon polarization and the geometry of the resonant states. It is remarkable that a current plateau is found when κ≥gγ in which the cavity-reservoir is dominant. In this case, the intraband transitions are diminished and the current peaks are not seen. 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 Infrastructure Fund . The computations were performed on resources provided by the Icelandic High Performance Computing Center at the University of Iceland . NRA acknowledges support from University of Sulaimani and Komar University of Science and Technology . Peer Reviewed