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Phonon spectral density in a GaAs/AlGaAs double quantum dot

Hofmann, A. ; Karlewski, C. ; Heimes, A. ; Reichl, C. ; Wegscheider, W. ; Schön, G. ; Ensslin, K. ; Ihn, T. and Maisi, V. F. LU (2020) In Physical Review Research 2(3).
Abstract
We study phonon emission in a GaAs/AlGaAs double quantum dot by monitoring the tunneling of a single electron between the two dots. We prepare the system such that a known amount of energy is emitted in the transition process. The energy is converted into lattice vibrations, and the resulting tunneling rate depends strongly on the phonon scattering and its effective phonon spectral density. We are able to fit the measured transition rates and see imprints of interference of phonons with themselves causing oscillations in the transition rates.
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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Research
volume
2
issue
3
article number
033230
pages
6 pages
publisher
American Physical Society
external identifiers
  • scopus:85100266471
ISSN
2643-1564
DOI
10.1103/PhysRevResearch.2.033230
language
English
LU publication?
yes
id
360b8235-41b1-4114-a93d-9ae7b3f99b03
date added to LUP
2021-01-18 10:10:49
date last changed
2023-11-20 21:40:57
@article{360b8235-41b1-4114-a93d-9ae7b3f99b03,
  abstract     = {{We study phonon emission in a GaAs/AlGaAs double quantum dot by monitoring the tunneling of a single electron between the two dots. We prepare the system such that a known amount of energy is emitted in the transition process. The energy is converted into lattice vibrations, and the resulting tunneling rate depends strongly on the phonon scattering and its effective phonon spectral density. We are able to fit the measured transition rates and see imprints of interference of phonons with themselves causing oscillations in the transition rates.}},
  author       = {{Hofmann, A. and Karlewski, C. and Heimes, A. and Reichl, C. and Wegscheider, W. and Schön, G. and Ensslin, K. and Ihn, T. and Maisi, V. F.}},
  issn         = {{2643-1564}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{3}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Research}},
  title        = {{Phonon spectral density in a GaAs/AlGaAs double quantum dot}},
  url          = {{http://dx.doi.org/10.1103/PhysRevResearch.2.033230}},
  doi          = {{10.1103/PhysRevResearch.2.033230}},
  volume       = {{2}},
  year         = {{2020}},
}