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


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.

SUBMITTER: Gudmundsson V 

PROVIDER: S-EPMC6404477 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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

Gudmundsson Vidar V   Gestsson Hallmann H   Abdullah Nzar Rauf NR   Tang Chi-Shung CS   Manolescu Andrei A   Moldoveanu Valeriu V  

Beilstein journal of nanotechnology 20190301


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 Ra  ...[more]

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