Patents by Inventor Adrian P. Kent

Adrian P. Kent 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).

  • Quantum information processing using electromagnetically induced transparency
    Patent number: 7560726
    Abstract: Quantum information processing structures and methods use photons and four-level matter systems in electromagnetically induced transparency (EIT) arrangements for one and two-qubit quantum gates, two-photon phase shifters, and Bell state measurement devices. For efficient coupling of the matter systems to the photons while decoupling the matter systems from the phonon bath, molecular cages or molecular tethers maintain the atoms within the electromagnetic field of the photon, e.g., in the evanescent field surrounding the core of an optical fiber carrying the photons. To reduce decoherence caused by spontaneous emissions, the matter systems can be embedded in photonic bandgap crystals or the matter systems can be selected to include metastable energy levels.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: July 14, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Raymond G. Beausoleil, Adrian P. Kent, Philip J. Kuekes, William J. Munro, Timothy P. Spiller, R. Stanley Williams
  • Tagging systems
    Patent number: 7075438
    Abstract: A method of verifying the position of a tagging device is described.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: July 11, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Adrian P. Kent, William J. Munro, Timothy P. Spiller, Raymond G. Beausoleil
  • Quantum information processing using electromagnetically induced transparency
    Publication number: 20040156407
    Abstract: Quantum information processing structures and methods use photons and four-level matter systems in electromagnetically induced transparency (EIT) arrangements for one and two-qubit quantum gates, two-photon phase shifters, and Bell state measurement devices. For efficient coupling of the matter systems to the photons while decoupling the matter systems from the phonon bath, molecular cages or molecular tethers maintain the atoms within the electromagnetic field of the photon, e.g., in the evanescent field surrounding the core of an optical fiber carrying the photons. To reduce decoherence caused by spontaneous emissions, the matter systems can be embedded in photonic bandgap crystals or the matter systems can be selected to include metastable energy levels.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 12, 2004
    Inventors: Raymond G. Beausoleil, Adrian P. Kent, Philip J. Kuekes, William J. Munro, Timothy P. Spiller, R. Stanley Williams