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Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavity

Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavity


Title: Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavity
Author: Gudmundsson, Vidar   orcid.org/0000-0001-8939-3522
Gestsson, Hallmann
Abdullah, Nzar Rauf
Tang, Chi-Shung
Manolescu, Andrei   orcid.org/0000-0002-0713-4664
Moldoveanu, Valeriu
Date: 2019-03-01
Language: English
Scope: 606-616
University/Institute: Háskólinn í Reykjavík
Reykjavik University
Háskóli Íslands
University of Iceland
School: Tækni- og verkfræðideild (HR)
School of Science and Engineering (RU)
Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Science Institute (UI)
Raunvísindastofnun (HÍ)
Series: Beilstein Journal of Nanotechnology;10
ISSN: 2190-4286
DOI: 10.3762/bjnano.10.61
Subject: Electron transport; Interactions; Photon cavity; Photon-dressed electron states; Time dependent; Oscillations; Markov processes; Rafeindir; Ljóseindir; Tími; Sveiflufræði; Markovferli; Skammtafræði; Rafsegulfræði
URI: https://hdl.handle.net/20.500.11815/1863

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Citation:

Gudmundsson, V., Gestsson, H., Abdullah, N. R., Tang, C.-S., Manolescu, A., & Moldoveanu, V. (2019). Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavity. Beilstein Journal of Nanotechnology, 10, 606–616. https://doi.org/10.3762/bjnano.10.61

Abstract:

In this work, we theoretically model the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a far-infrared (FIR) photon cavity. For the transient and the intermediate time regimes, the current and the average photon number are calculated by solving a Markovian master equation in the dressed-states picture, with the Coulomb interaction also taken into account. We predict that in the presence of a transverse magnetic field the interdot Rabi oscillations appearing in the intermediate and transient regime coexist with slower non-equilibrium fluctuations in the occupation of states for opposite spin orientation. The interdot Rabi oscillation induces charge oscillations across the system and a phase difference between the transient source and drain currents. We point out a difference between the steady-state correlation functions in the Coulomb blocking and the photon-assisted transport regimes.

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This is an Open Access article under the terms of theCreative Commons Attribution License (http://creativecommons.org/licenses/by/4.0). Please notethat the reuse, redistribution and reproduction in particularrequires that the authors and source are credited.

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