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Detection of charge states in nanowire quantum dots using a quantum point contact

Wallin, Daniel LU ; Fuhrer, Andreas LU ; Fröberg, Linus LU ; Samuelson, Lars LU ; Xu, Hongqi LU ; Hofling, Sven and Forchel, Alfred (2007) In Applied Physics Letters 90.
Abstract
The authors demonstrate operation of a charge readout scheme for quantum dots in a semiconductor

nanowire using a quantum point contact defined in a GaAs/AlGaAs two-dimensional electron gas

beneath the nanowire. The quantum dots were fabricated by epitaxial growth of InP barriers along

a n-type InAs nanowire. Applying negative voltages to two split-gate electrodes aligned to the

nanowire induces a quantum point contact in the two-dimensional electron gas such that charging of

quantum dots in the nanowire modulates the quantum point contact transmission, thus resulting in

the desired detector response.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
90
publisher
American Institute of Physics
external identifiers
  • WOS:000246568600067
  • Scopus:34248597958
ISSN
0003-6951
DOI
10.1063/1.2732829
language
English
LU publication?
yes
id
0f4724ec-a5cc-4fbd-a32e-a1edba4879f0 (old id 764012)
date added to LUP
2007-12-17 18:06:33
date last changed
2016-10-13 04:55:00
@misc{0f4724ec-a5cc-4fbd-a32e-a1edba4879f0,
  abstract     = {The authors demonstrate operation of a charge readout scheme for quantum dots in a semiconductor<br/><br>
nanowire using a quantum point contact defined in a GaAs/AlGaAs two-dimensional electron gas<br/><br>
beneath the nanowire. The quantum dots were fabricated by epitaxial growth of InP barriers along<br/><br>
a n-type InAs nanowire. Applying negative voltages to two split-gate electrodes aligned to the<br/><br>
nanowire induces a quantum point contact in the two-dimensional electron gas such that charging of<br/><br>
quantum dots in the nanowire modulates the quantum point contact transmission, thus resulting in<br/><br>
the desired detector response.},
  author       = {Wallin, Daniel and Fuhrer, Andreas and Fröberg, Linus and Samuelson, Lars and Xu, Hongqi and Hofling, Sven and Forchel, Alfred},
  issn         = {0003-6951},
  language     = {eng},
  publisher    = {ARRAY(0x994e0e0)},
  series       = {Applied Physics Letters},
  title        = {Detection of charge states in nanowire quantum dots using a quantum point contact},
  url          = {http://dx.doi.org/10.1063/1.2732829},
  volume       = {90},
  year         = {2007},
}