Coherent manipulation of electronic states in a double quantum dot

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

Research output: Contribution to journalArticlepeer-review

697 Citations (Scopus)


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.

Original languageEnglish
JournalPhysical Review Letters
Issue number22
Publication statusPublished - 2003


Dive into the research topics of 'Coherent manipulation of electronic states in a double quantum dot'. Together they form a unique fingerprint.

Cite this