Spintronics and Quantum Computing with Quantum Dots

Details Spintronics and Quantum Computing with Quantum Dots Spintronics and Quantum Computing with Quantum Dots

2000-09-19

arxiv.org/abs/cond-mat/0009270v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, 3 figures. To appear in the Proceedins of ``Macroscopic Quantum Coherence and Computing" - MQC2 2000, eds. D. Averin

Scientific paper

The creation, coherent manipulation, and measurement of spins in nanostructures open up completely new possibilities for electronics and information processing, among them quantum computing and quantum communication. We review our theoretical proposal for using electron spins in quantum dots as quantum bits. We present single- and two qubit gate mechanisms in laterally as well as vertically coupled quantum dots and discuss the possibility to couple spins in quantum dots via superexchange. We further present the recently proposed schemes for using a single quantum dot as spin-filter and spin read-out/memory device.

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