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Robust adiabatic approach to optical spin entangling in coupled quantum dots

Abstract:

Excitonic transitions offer a possible route to ultrafast optical spin manipulation in coupled nanostructures. We perform here a detailed study of the three principal exciton-mediated decoherence channels for optically controlled electron spin qubits in coupled quantum dots: radiative decay of the excitonic state, exciton-phonon interactions, and Landau-Zener transitions between laser-dressed states. We consider a scheme for producing an entangling controlled-phase gate on a pair of coupled s...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1367-2630/10/7/073016

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Research group:
Quantum & Nano Technology Group
Oxford college:
Wolfson College
Role:
Author
More by this author
Institution:
"University College London", "Griffith University, Brisbane, Australia"
Department:
Centre for Quantum Dynamics and Centre for Quantum Computer Technology
Role:
Author
More by this author
Institution:
"University of Oxford", "National University of Singapore"
Research group:
Quantum & Nano Technology Group
Oxford college:
Exeter College
Department:
Centre for Quantum Technologies
Role:
Author
More by this author
Institution:
"University of Queensland, Brisbane, Australia"
Department:
Department of Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Research group:
Quantum & Nano Technology Group
Oxford college:
St Anne's College
Role:
Author

Contributors

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Grant:
GR/S82176/01
More from this funder
Funding agency for:
Benjamin, S
Lovett, B
National Research Foundation, Singapore More from this funder
Publisher:
Institute of Physics Publishing Ltd Publisher's website
Journal:
New Journal of Physics Journal website
Volume:
10
Issue:
7
Article number:
073016
Publication date:
2008-07-01
DOI:
EISSN:
1367-2630
Language:
English
Keywords:
Subjects:
UUID:
uuid:e53818e5-71d5-4173-97ad-83b7ebc226e2
Local pid:
ora:2487
Deposit date:
2009-01-09

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