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http://hdl.handle.net/2014/40470
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| Title: | Electron spin dephasing and decoherence by interaction with nuclear spins in self-assembled quantum dots |
| Authors: | Lee, Seungwon
von Allmen, Paul
Oyafuso, Fabiano
Klimeck, Gerhard
Whale, K. Birgitta |
| Keywords: | spin decoherence
quantum computation
ensemble dephasing |
| Issue Date: | 5-Jan-2004 |
| Publisher: | Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2003 |
| Citation: | Winter International Symposium on Information and Communication Technologies, Cancun, Mexico, January 5-8th, 2004 |
| Abstract: | Electron 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 µs. |
| URI: | http://hdl.handle.net/2014/40470 |
| Appears in Collections: | JPL TRS 1992+
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