• DocumentCode
    999729
  • Title

    Coherent charge oscillation in a semiconductor double quantum dot

  • Author

    Hayashi, Toshiaki ; Fujisawa, Toshimasa ; Cheong, H.D. ; Jeong, Y.H. ; Hirayama, Y.

  • Author_Institution
    Basic Res. Labs., Nippon Telephone & Telegraph Corp., Kanagawa, Japan
  • Volume
    3
  • Issue
    2
  • fYear
    2004
  • fDate
    6/1/2004 12:00:00 AM
  • Firstpage
    300
  • Lastpage
    303
  • Abstract
    The time evolution of a pulse-excited charge qubit in a semiconductor double quantum dot is investigated. All-electrical initialization and coherent gate control of the system are achieved, and coherent charge oscillation is observed through the transport measurements. The oscillation frequency and decoherence time T2 are estimated by fitting the transport data with a simple model. Possible decoherence mechanisms in a charge qubit system are pointed out and discussed in detail.
  • Keywords
    Coulomb blockade; electron-phonon interactions; semiconductor quantum dots; coherent charge oscillation; decoherence mechanisms; pulse-excited charge qubit; semiconductor double quantum dot; transport measurements; Current measurement; Electrodes; Electrons; Frequency estimation; Microscopy; Quantum computing; Quantum dots; Tunneling; US Department of Transportation; Voltage control; Charge qubit; QD; decoherence; double quantum dot;
  • fLanguage
    English
  • Journal_Title
    Nanotechnology, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1536-125X
  • Type

    jour

  • DOI
    10.1109/TNANO.2004.828551
  • Filename
    1303526
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=999729