Stepwise introduction of model complexity in a generalized master equation approach to time‐dependent transport

@article{Gudmundsson2012StepwiseIO,
  title={Stepwise introduction of model complexity in a generalized master equation approach to time‐dependent transport},
  author={Vidar Gudmundsson and O. Jonasson and Thorsten Arnold and Chi‐Shung Tang and Hsi-Sheng Goan and Andrei Manolescu},
  journal={Fortschritte der Physik},
  year={2012},
  volume={61}
}
We demonstrate that with a stepwise introduction of complexity to a model of an electron system embedded in a photonic cavity and a carefully controlled stepwise truncation of the ensuing many‐body space it is possible to describe the time‐dependent transport of electrons through the system with a non‐Markovian generalized quantum master equation. We show how this approach retains effects of the geometry of an anisotropic electronic system. The Coulomb interaction between the electrons and the… 

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References

SHOWING 1-10 OF 24 REFERENCES

Time-dependent transport of electrons through a photon cavity

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

Time-dependent transport via the generalized master equation through a finite quantum wire with an embedded subsystem

In this paper, we apply the generalized master equation to analyze time-dependent transport through a finite quantum wire with an embedded subsystem. The parabolic quantum wire and the leads with

Correlated time-dependent transport through a two-dimensional quantum structure

We use a generalized master equation (GME) to describe the nonequilibrium magnetotransport of interacting electrons through a broad finite quantum wire with an embedded ring structure. The finite

Geometrical effects and signal delay in time-dependent transport at the nanoscale

Nonstationary and steady-state transport through a mesoscopic sample connected to particle reservoirs via time-dependent barriers is investigated by the reduced density operator method. The

Generalized Jaynes-Cummings models with a time-dependent atom-field coupling.

  • JoshiLawande
  • Physics
    Physical review. A, Atomic, molecular, and optical physics
  • 1993
The statistical aspects of the field, such as intensity-intensity correlation and squeezing, are found to be both qualitatively as well as quantitatively different from the standard JC models.

Quantum magneto-electrodynamics of electrons embedded in a photon cavity

We investigate the coupling between a quantized electromagnetic field in a cavity resonator and a Coulomb interacting electronic system in a nanostructure in an external magnetic field. The effects

Ensemble Method in the Theory of Irreversibility

We describe a new formulation of methods introduced in the theory of irreversibility by Van Hove and Prigogine, with the purpose of making their ideas easier to understand and to apply. The main tool

On Quantum Theory of Transport Phenomena Steady Diffusion

A general formulation is given to the quantum theory of steady diffusion. In seeking for a steady solution of Liouville's equation, the boundary condition is taken into account by requiring that the

Circuit quantum electrodynamics in the ultrastrong-coupling regime

The Jaynes–Cummings model describes the interaction between a two-level system and a small number of photons. It is now shown that the model breaks down in the regime of ultrastrong coupling between

Comparison of quantum and semiclassical radiation theories with application to the beam maser

This paper has two purposes: 1) to clarify the relationship between the quantum theory of radiation, where the electromagnetic field-expansion coefficients satisfy commutation relations, and the