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Nature 458, 841-843 (16 April 2009) | doi:10.1038/458841a; Published online 15 April 2009
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Solid-state physics: Bouncing spins
Lieven M. K. Vandersypen1
Abstract
The conventional approach to flipping electron spins in a semiconductor requires an external alternating field. It seems that the same job can be accomplished without external excitation of any kind.
A mother pushing her son on a swing knows that she must push the swing in synchrony with the swinging motion. Similarly, to flip the spin of an electron in a static magnetic field, we must apply an alternating magnetic field whose frequency matches the wobbling motion of the electron's spin orientation about the static field.
- Lieven M. K. Vandersypen is at the Kavli Institute of NanoScience, TU Delft, Lorentzweg 1 CJ Delft 2628, the Netherlands.
Email: l.m.k.vandersypen@tudelft.nl
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