Quantum information processing with large nuclear spins in GaAs semiconductors

Leuenberger, M. N. and Loss, D. and Poggio, M. and Awschalom, D. D.. (2002) Quantum information processing with large nuclear spins in GaAs semiconductors. Physical review letters, Vol. 89, H. 20 , 207601, 4 S..

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Official URL: http://edoc.unibas.ch/dok/A5254710

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We propose an implementation for quantum information processing based on coherent manipulations of nuclear spins I = 3/2 in GaAs semiconductors. We describe theoretically an NMR method which involves multiphoton transitions and which exploits the nonequidistance of nuclear spin levels due to quadrupolar splittings. Starting from known spin anisotropies we derive effective Hamiltonians in a generalized rotating frame, valid for arbitrary I, which allow us to describe the nonperturbative time evolution of spin states generated by magnetic rf fields. We identify an experimentally observable regime for multiphoton Rabi oscillations. In the nonlinear regime, we find Berry phase interference.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:53

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