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Wavefunction and spectral properties of single-particle emitters

Locane, Elina LU (2013) FYSM60 20131
Department of Physics
Abstract
The past six years have seen the development of fast and accurate single-particle sources, with possible applications in metrology, nanoelectronics, quantum information processing, and single-electron quantum optics. These mesoscopic devices also enable us to gain more insight into the quantum mechanics of interacting fermions.
In the present work, we study the energy spectrum of the emitted state from a single-particle source. The model we employ for such a system is a single-level quantum dot with a time-dependent energy level coupled to a non-interacting single-mode lead via a time-dependent tunneling barrier. We use the Floquet scattering approach to obtain an analytic expression for the emitted electron amplitudes as well as the... (More)
The past six years have seen the development of fast and accurate single-particle sources, with possible applications in metrology, nanoelectronics, quantum information processing, and single-electron quantum optics. These mesoscopic devices also enable us to gain more insight into the quantum mechanics of interacting fermions.
In the present work, we study the energy spectrum of the emitted state from a single-particle source. The model we employ for such a system is a single-level quantum dot with a time-dependent energy level coupled to a non-interacting single-mode lead via a time-dependent tunneling barrier. We use the Floquet scattering approach to obtain an analytic expression for the emitted electron amplitudes as well as the non-equilibrium Green's functions formalism for calculating the average occupation number in the lead. We also show that in the limit when the effect of the Fermi sea can be neglected, these results agree with the single-particle solution to the Schr\"{o}dinger equation. (Less)
Please use this url to cite or link to this publication:
author
Locane, Elina LU
supervisor
organization
course
FYSM60 20131
year
type
H2 - Master's Degree (Two Years)
subject
language
English
id
3915350
date added to LUP
2013-07-04 14:22:09
date last changed
2013-07-04 14:22:09
@misc{3915350,
  abstract     = {The past six years have seen the development of fast and accurate single-particle sources, with possible applications in metrology, nanoelectronics, quantum information processing, and single-electron quantum optics. These mesoscopic devices also enable us to gain more insight into the quantum mechanics of interacting fermions.
In the present work, we study the energy spectrum of the emitted state from a single-particle source. The model we employ for such a system is a single-level quantum dot with a time-dependent energy level coupled to a non-interacting single-mode lead via a time-dependent tunneling barrier. We use the Floquet scattering approach to obtain an analytic expression for the emitted electron amplitudes as well as the non-equilibrium Green's functions formalism for calculating the average occupation number in the lead. We also show that in the limit when the effect of the Fermi sea can be neglected, these results agree with the single-particle solution to the Schr\"{o}dinger equation.},
  author       = {Locane, Elina},
  language     = {eng},
  note         = {Student Paper},
  title        = {Wavefunction and spectral properties of single-particle emitters},
  year         = {2013},
}