{ "id": "cond-mat/0308362", "version": "v1", "published": "2003-08-19T00:57:07.000Z", "updated": "2003-08-19T00:57:07.000Z", "title": "Coherent manipulation of electronic states in a double quantum dot", "authors": [ "Toshiaki Hayashi", "Toshimasa Fujisawa", "Hai-Du Cheong", "Yoon-Ha Jeong", "Yoshiro Hirayama" ], "comment": "RevTeX", "doi": "10.1103/PhysRevLett.91.226804", "categories": [ "cond-mat.mes-hall" ], "abstract": "We investigate coherent time-evolution of charge states (pseudo-spin qubit) in a semiconductor double quantum dot. This fully-tunable qubit is manipulated with a high-speed voltage pulse that controls the energy and decoherence of the system. Coherent oscillations of the qubit are observed for several combinations of many-body ground and excited states of the quantum dots. Possible decoherence mechanisms in the present device are also discussed.", "revisions": [ { "version": "v1", "updated": "2003-08-19T00:57:07.000Z" } ], "analyses": { "keywords": [ "electronic states", "coherent manipulation", "semiconductor double quantum dot", "decoherence mechanisms", "coherent time-evolution" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. Lett." }, "note": { "typesetting": "RevTeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }