{ "id": "0709.0920", "version": "v2", "published": "2007-09-06T16:55:32.000Z", "updated": "2007-09-07T13:28:41.000Z", "title": "Dynamic Nuclear Polarization with Single Electron Spins", "authors": [ "J. R. Petta", "J. M. Taylor", "A. C. Johnson", "A. Yacoby", "M. D. Lukin", "C. M. Marcus", "M. P. Hanson", "A. C. Gossard" ], "comment": "related papers available at http://marcuslab.harvard.edu", "journal": "Phys. Rev. Lett. 100, 067601 (2008).", "doi": "10.1103/PhysRevLett.100.067601", "categories": [ "cond-mat.mes-hall" ], "abstract": "We polarize nuclear spins in a GaAs double quantum dot by controlling two-electron spin states near the anti-crossing of the singlet (S) and m_S=+1 triplet (T+) using pulsed gates. An initialized S state is cyclically brought into resonance with the T+ state, where hyperfine fields drive rapid rotations between S and T+, 'flipping' an electron spin and 'flopping' a nuclear spin. The resulting Overhauser field approaches 80 mT, in agreement with a simple rate-equation model. A self-limiting pulse sequence is developed that allows the steady-state nuclear polarization to be set using a gate voltage.", "revisions": [ { "version": "v2", "updated": "2007-09-07T13:28:41.000Z" } ], "analyses": { "subjects": [ "76.70.Fz", "73.21.La" ], "keywords": [ "dynamic nuclear polarization", "single electron spins", "hyperfine fields drive rapid rotations", "nuclear spin", "resulting overhauser field approaches" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review Letters", "year": 2008, "month": "Feb", "volume": 100, "number": 6, "pages": "067601" }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008PhRvL.100f7601P" } } }