# Exchange Control of Nuclear Spin Diffusion in a Double Quantum Dot

 Title: Exchange Control of Nuclear Spin Diffusion in a Double Quantum Dot Author: Reilly, David J.; Taylor, Jacob Mason; Petta, Jason R.; Marcus, Charles Masamed; Hanson, Micah P.; Gossard, Arthur C. Note: Order does not necessarily reflect citation order of authors. Citation: 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. Full Text & Related Files: Reilly_ExchangeControl.pdf (1.069Mb; PDF) 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. Published Version: doi:10.1103/PhysRevLett.104.236802 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 Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:5128479