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Electron Spin Dephasing and Decoherence by Interaction with Nuclear Spins in Self-Assembled Quantum DotsElectron spin dephasing and decoherence by its interaction with nuclear spins in self-assembled quantum dots are investigated in the framework of the empirical tight-binding model. Electron spin dephasing in an ensemble of dots is induced by the inhomogeneous precession frequencies of the electron among dots, while electron spin decoherence in a single dot arises from the inhomogeneous precession frequencies of nuclear spins in the dot. For In(x)Ga(1-x) As self-assembled dots containing ~30000 nuclei, the dephasing and decoherence times are predicted to be on the order of 100 ps and 1 (micro)s.
Document ID
20070035001
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Lee, Seungwon
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
vonAllmen, Paul
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Oyafuso, Fabiano
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Klimeck, Gerhard
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Whale, K. Birgitta
(California Univ. Berkeley, CA, United States)
Date Acquired
August 24, 2013
Publication Date
January 5, 2004
Subject Category
Physics (General)
Meeting Information
Meeting: Winter International Symposium on Information and Communication Technologies
Location: Cancun
Country: Mexico
Start Date: January 5, 2004
End Date: January 8, 2004
Distribution Limits
Public
Copyright
Other
Keywords
ensemble dephasing
quantum computation
spin decoherence

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