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

647 Citations (Scopus)

Abstract

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
Volume91
Issue number22
DOIs
Publication statusPublished - 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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

Cite this