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Spintronics and quantum dots for quantum computing and quantum communication
Editor(s)
Skjeltorp, AT and Vicsek, T
Book title (Conference Proceedings)
Complexity from microscopic to macroscopic scales : coherence and large deviations (NATO science series II, Mathematics, physics and chemistry, Vol. 63)
Volume
63
Place of Conference
Conference of the NATO Advanced Study Institute on Complexity from Microscopic to Macroscopic Scales, GEILOMO, NORWAY, APR 17-27, 2001
Publisher
Kluwer Academic Publ.: 2002
Place of Publication
Dordrecht
Pages
S. 83-104
ISSN/ISBN
1-4020-0633-0
Abstract
Control over electron-spin states, such as coherent manipulation, filtering and measurement promises access to new technologies in conventional as well as in quantum computation and quantum communication. We review our proposal of using electron spins in quantum confined structures as qubits and discuss the requirements for implementing a quantum computer. We describe several realizations of one- and two-qubit gates and of the read-in and read-out tasks. We discuss recently proposed schemes for using a single quantum dot as spin-filter and spin-memory device. Considering electronic EPR pairs needed for quantum communication we show that their spin entanglement can be detected in mesoscopic transport measurements using metallic as well as superconducting leads attached to the dots.
Series title
NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY
