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Full counting statistics of generic spin entangler with quantum dot-ferromagnet detectors

Malkoc, Ognjen LU ; Bergenfeldt, Christian LU and Samuelsson, Peter LU (2014) In Europhysics Letters 105(4).
Abstract
Entanglement between spatially separated electrons in nanoscale transport is a fundamental property, yet to be demonstrated experimentally. Here we propose and analyse theoretically the transport statistics of a generic spin entangler coupled to a hybrid quantum dot-ferromagnet detector system. We show that the full distribution of charges arriving at the ferromagnetic terminals provides complete information on the spin state of the particles emitted by the entangler. This provides means for spin entanglement detection via electrical current correlations, with optimal measurement strategies depending on the a priori knowledge of ferromagnet polarization and spin-flip rates in the detector dots. The scheme is exemplified by applying it to... (More)
Entanglement between spatially separated electrons in nanoscale transport is a fundamental property, yet to be demonstrated experimentally. Here we propose and analyse theoretically the transport statistics of a generic spin entangler coupled to a hybrid quantum dot-ferromagnet detector system. We show that the full distribution of charges arriving at the ferromagnetic terminals provides complete information on the spin state of the particles emitted by the entangler. This provides means for spin entanglement detection via electrical current correlations, with optimal measurement strategies depending on the a priori knowledge of ferromagnet polarization and spin-flip rates in the detector dots. The scheme is exemplified by applying it to Andreev and triple dot entanglers. Copyright (C) EPLA, 2014 (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Europhysics Letters
volume
105
issue
4
publisher
EDP Sciences
external identifiers
  • wos:000333016700028
  • scopus:84896370067
ISSN
0295-5075
DOI
10.1209/0295-5075/105/47013
language
English
LU publication?
yes
id
015522a3-56a3-4e33-8a95-7f181aac545f (old id 4410809)
date added to LUP
2014-04-29 10:01:59
date last changed
2017-01-01 03:30:35
@article{015522a3-56a3-4e33-8a95-7f181aac545f,
  abstract     = {Entanglement between spatially separated electrons in nanoscale transport is a fundamental property, yet to be demonstrated experimentally. Here we propose and analyse theoretically the transport statistics of a generic spin entangler coupled to a hybrid quantum dot-ferromagnet detector system. We show that the full distribution of charges arriving at the ferromagnetic terminals provides complete information on the spin state of the particles emitted by the entangler. This provides means for spin entanglement detection via electrical current correlations, with optimal measurement strategies depending on the a priori knowledge of ferromagnet polarization and spin-flip rates in the detector dots. The scheme is exemplified by applying it to Andreev and triple dot entanglers. Copyright (C) EPLA, 2014},
  articleno    = {47013},
  author       = {Malkoc, Ognjen and Bergenfeldt, Christian and Samuelsson, Peter},
  issn         = {0295-5075},
  language     = {eng},
  number       = {4},
  publisher    = {EDP Sciences},
  series       = {Europhysics Letters},
  title        = {Full counting statistics of generic spin entangler with quantum dot-ferromagnet detectors},
  url          = {http://dx.doi.org/10.1209/0295-5075/105/47013},
  volume       = {105},
  year         = {2014},
}