Details

Autor(en) / Beteiligte

• Hayashi, T
• Fujisawa, T
• Cheong, H D
• Jeong, Y H
• Hirayama, Y

Titel

Coherent manipulation of electronic States in a double quantum dot

Ist Teil von

• Physical review letters, 2003-11, Vol.91 (22), p.226804-226804, Article 226804

Ort / Verlag

United States

Erscheinungsjahr

2003

Quelle

APS

Beschreibungen/Notizen

• We investigate coherent time evolution of charge states (pseudospin 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.