Exchange Control of Nuclear Spin Diffusion in a Double Quantum Dot

 
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Reilly, David J.
Petta, Jason R.
Hanson, Micah P.
Gossard, Arthur C.
Published Version
https://doi.org/10.1103/PhysRevLett.104.236802
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Reilly, David J., Jacob M. Taylor, Jason R. Petta, Charles M. Marcus, Micah P. Hanson and Arthur C. Gossard. 2010. Exchange control of nuclear spin diffusion in a double quantum dot. Physical Review Letters 104(23): 236802.
Abstract
The influence of gate-controlled two-electron exchange on the relaxation of nuclear polarization in
small ensembles \((N \sim 10^6)\) of nuclear spins is examined in a GaAs double quantum dot system. Waiting in the (2,0) charge configuration, which has large exchange splitting, reduces the nuclear diffusion rate compared to that of the (1,1) configuration. Matching exchange to Zeeman splitting significantly increases the nuclear diffusion rate.
Other Sources
http://marcus.physics.harvard.edu/papers/Reilly_Exchange_PRL2010.pdf
http://pettagroup.princeton.edu/publications/Reilly_PRL_104_236802_2010.pdf
http://arxiv.org/abs/0803.3082
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http://nrs.harvard.edu/urn-3:HUL.InstRepos:5128479

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