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Subdecoherence Time Generation and Detection of Orbital Entanglement in Quantum Dots

Brange, Fredrik LU ; Malkoc, Ognjen LU and Samuelsson, Peter LU (2015) In Physical Review Letters 114.
Abstract
Recent experiments have demonstrated subdecoherence time control of individual single-electron orbital qubits. Here we propose a quantum-dot-based scheme for generation and detection of pairs of orbitally entangled electrons on a time scale much shorter than the decoherence time. The electrons are entangled, via two-particle interference, and transferred to the detectors during a single cotunneling event, making the scheme insensitive to charge noise. For sufficiently long detector dot lifetimes, cross-correlation detection of the dot charges can be performed with real-time counting techniques, providing for an unambiguous short-time Bell inequality test of orbital entanglement.
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
114
article number
176803
publisher
American Physical Society
external identifiers
  • wos:000353547100012
  • pmid:25978249
  • scopus:84930225050
  • pmid:25978249
ISSN
1079-7114
DOI
10.1103/PhysRevLett.114.176803
language
English
LU publication?
yes
id
a90ccdf9-f8d2-43a0-b9e0-73f920fdf747 (old id 5386533)
date added to LUP
2016-04-01 10:24:49
date last changed
2025-10-14 13:14:29
@article{a90ccdf9-f8d2-43a0-b9e0-73f920fdf747,
  abstract     = {{Recent experiments have demonstrated subdecoherence time control of individual single-electron orbital qubits. Here we propose a quantum-dot-based scheme for generation and detection of pairs of orbitally entangled electrons on a time scale much shorter than the decoherence time. The electrons are entangled, via two-particle interference, and transferred to the detectors during a single cotunneling event, making the scheme insensitive to charge noise. For sufficiently long detector dot lifetimes, cross-correlation detection of the dot charges can be performed with real-time counting techniques, providing for an unambiguous short-time Bell inequality test of orbital entanglement.}},
  author       = {{Brange, Fredrik and Malkoc, Ognjen and Samuelsson, Peter}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Subdecoherence Time Generation and Detection of Orbital Entanglement in Quantum Dots}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.114.176803}},
  doi          = {{10.1103/PhysRevLett.114.176803}},
  volume       = {{114}},
  year         = {{2015}},
}