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Counting statistics and decoherence in coupled quantum dots

Kiesslich, G; Samuelsson, Peter LU ; Wacker, Andreas LU and Scholl, E (2006) In Physical Review B (Condensed Matter and Materials Physics) 73(3). p.1-033312
Abstract
We theoretically consider charge transport through two quantum dots coupled in series. The corresponding full counting statistics for noninteracting electrons is investigated in the limits of sequential and coherent tunneling by means of a master equation approach and a density matrix formalism, respectively. We clearly demonstrate the effect of quantum coherence on the zero-frequency cumulants of the transport process, focusing on noise and skewness. Moreover, we establish the continuous transition from the coherent to the incoherent tunneling limit in all cumulants of the transport process and compare this with decoherence described by a dephasing voltage probe model.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
73
issue
3
pages
1 - 033312
publisher
American Physical Society
external identifiers
  • wos:000235009500025
  • scopus:33144476844
ISSN
1098-0121
DOI
10.1103/PhysRevB.73.033312
language
English
LU publication?
yes
id
a9ac85c0-1d1b-4bba-8e2a-c35e818270fb (old id 418048)
date added to LUP
2007-10-07 15:29:39
date last changed
2019-04-02 02:49:03
@article{a9ac85c0-1d1b-4bba-8e2a-c35e818270fb,
  abstract     = {We theoretically consider charge transport through two quantum dots coupled in series. The corresponding full counting statistics for noninteracting electrons is investigated in the limits of sequential and coherent tunneling by means of a master equation approach and a density matrix formalism, respectively. We clearly demonstrate the effect of quantum coherence on the zero-frequency cumulants of the transport process, focusing on noise and skewness. Moreover, we establish the continuous transition from the coherent to the incoherent tunneling limit in all cumulants of the transport process and compare this with decoherence described by a dephasing voltage probe model.},
  author       = {Kiesslich, G and Samuelsson, Peter and Wacker, Andreas and Scholl, E},
  issn         = {1098-0121},
  language     = {eng},
  number       = {3},
  pages        = {1--033312},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Counting statistics and decoherence in coupled quantum dots},
  url          = {http://dx.doi.org/10.1103/PhysRevB.73.033312},
  volume       = {73},
  year         = {2006},
}