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We analyze how a multilevel many-electron system in a photon cavity approaches the steady state when coupled to external leads. When a plunger gate is used to lower cavity photon dressed one- and two-electron states below the bias window…

We investigate transient transport of electrons through a single-quantum-dot controlled by a plunger gate. The dot is embedded in a finite wire that is weakly coupled to leads and strongly coupled to a single cavity photon mode. A…

Mesoscale and Nanoscale Physics · Physics 2013-11-15 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

We present new results on cavity-photon-assisted electron transport through two lateral quantum dots embedded in a finite quantum wire. The double quantum dot system is weakly connected to two leads and strongly coupled to a single…

Mesoscale and Nanoscale Physics · Physics 2014-09-17 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

We use a non-Markovian master equation to describe the transport of Coulomb interacting electrons through an electromagnetic cavity with one quantized photon mode. The central system is a finite parabolic quantum wire that is coupled weakly…

Mesoscale and Nanoscale Physics · Physics 2012-03-15 Vidar Gudmundsson , Olafur Jonasson , Chi-Shung Tang , Hsi-Sheng Goan , Andrei Manolescu

We present a theoretical study of the electronic transport through a many-level quantum dot driven by time-dependent signals applied at the contacts to the leads. If the barriers oscillate out of phase the system operates like a turnstile…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Valeriu Moldoveanu , Vidar Gudmundsson , Andrei Manolescu

We calculate the current correlations for the steady-state electron transport through multi-level parallel quantum dots embedded in a short quantum wire, that is placed in a non-perfect photon cavity. We account for the electron-electron…

Mesoscale and Nanoscale Physics · Physics 2018-05-23 Vidar Gudmundsson , Nzar Rauf Abdullah , Anna Sitek , Hsi-Sheng Goan , Chi-Shung Tang , Andrei Manolescu

We investigate magnetic-field influenced time-dependent transport of Coulomb interacting electrons through a two-dimensional quantum ring in an electromagnetic cavity under non-equilibrium conditions described by a time-convolutionless…

Mesoscale and Nanoscale Physics · Physics 2013-07-02 Thorsten Arnold , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

We show that quantum electromagnetic transitions to high orders are essential to describe the time-dependent path of a nanoscale electron system in a Coulomb blockage regime when coupled to external leads and placed in a three-dimensional…

Mesoscale and Nanoscale Physics · Physics 2019-10-14 Vidar Gudmundsson , Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Valeriu Moldoveanu

We investigate the nonstationary electronic transport in noninteracting nanostructures driven by a finite bias and time-dependent signals applied at their contacts to the leads. The systems are modelled by a tight-binding Hamiltonian and…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Valeriu Moldoveanu , Vidar Gudmundsson , Andrei Manolescu

We study a cavity-photon-switched coherent electron transport in a symmetric double quantum waveguide. The waveguide system is weakly connected to two electron reservoirs, but strongly coupled to a single quantized photon cavity mode. A…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

We investigate the influence of a quantized photon field on thermoelectric transport of electrons through a quantum wire embedded in a photon cavity. The quantum wire is connected to two electron reservoirs at different temperatures leading…

Mesoscale and Nanoscale Physics · Physics 2016-03-31 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

We explore higher order dynamical effects in the transport through a two-dimensional nanoscale electron system embedded in a three-dimensional far-infrared photon cavity. The nanoscale system is considered to be a short quantum wire with a…

Mesoscale and Nanoscale Physics · Physics 2020-12-11 Vidar Gudmundsson , Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Valeriu Moldoveanu

We develop in this work a simple qualitative quantum electron transport model, in the strong light-matter coupling regime under dipole approximation, able to capture polaritonic signatures in the time-dependent electrical current. The…

Mesoscale and Nanoscale Physics · Physics 2022-12-07 Carlos F. Destefani , Matteo Villani , Xavier Cartoixà , Michael Feiginov , Xavier Oriols

We model the electron transport current as the photon energy is swept through several resonances of a multi-level quantum dot, embedded in a short quantum wire, coupled to photon cavity. We use a Markovian quantum master equation…

Mesoscale and Nanoscale Physics · Physics 2020-06-12 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

Recent experimental progress in coupling nanoscale conductors to superconducting microwave cavities has opened up for transport investigations of the deep quantum limit of light-matter interactions, with tunneling electrons strongly coupled…

Mesoscale and Nanoscale Physics · Physics 2013-06-26 C. Bergenfeldt , P. Samuelsson

We study electron transport through double quantum dots (DQD) coupled to a cavity with a single photon mode. The DQD is connected to two electron reservoirs, and the total system is under an external perpendicular magnetic field. The DQD…

Mesoscale and Nanoscale Physics · Physics 2022-07-05 Halo Anwar Abdulkhalaq , Nzar Rauf Abdullah , Vidar Gudmundsson

We perform theoretical calculations to study steady-state electron transport in a double quantum dot, DQD, coupled to a quantized cavity photon field both in resonance and off-resonance regimes considering weak and strong coupling. In the…

Mesoscale and Nanoscale Physics · Physics 2023-02-22 Halo Anwar Abdulkhalaq , Nzar Rauf Abdullah , Vidar Gudmundsson

In this study, we show how a static magnetic field can control photon-induced electron transport through a quantum dot system coupled to a photon cavity. The quantum dot system is connected to two electron reservoirs and exposed to an…

Mesoscale and Nanoscale Physics · Physics 2018-04-10 Nzar Rauf Abdullah , Aziz H. Fatah , Jabar M. A. Fatah

We investigate theoretically the transport properties of a mesoscopic system driven by a sequence of rectangular pulses applied at the contact to the input (left) lead. The characteristics of the current which would be measured in the…

Mesoscale and Nanoscale Physics · Physics 2009-11-27 Valeriu Moldoveanu , Andrei Manolescu , Vidar Gudmundsson

We present a double quantum wire system containing a coupling element in the middle barrier between the two parallel quantum wires. We explicitly account for the finite length of the double quantum wire with a time-dependent switching-on…

Mesoscale and Nanoscale Physics · Physics 2010-11-30 Nzar Rauf Abdullah , Chi-Shung Tang , Vidar Gudmundsson
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