Patents by Inventor Robert James Joynt

Robert James Joynt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Spin readout and initialization in semiconductor quantum dots
    Patent number: 7135697
    Abstract: A semiconductor quantum dot device converts spin information to charge information utilizing an elongated quantum dot having an asymmetric confining potential along its length so that charge movement occurs during orbital excitation. A single electron sensitive electrometer is utilized to detect the charge movement. Initialization and readout can be carried out rapidly utilizing RF fields at appropriate frequencies.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: November 14, 2006
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Mark Gregory Friesen, Charles George Tahan, Robert James Joynt, Mark A. Eriksson