Patents by Inventor Sandu Popescu

Sandu Popescu 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).

  • Reducing depolarisation
    Patent number: 7565037
    Abstract: The present invention provides a method for reducing spreading of a pulse in a transmission line, said spreading being as a result of polarization mode dispersion, comprising inducing predetermined polarization rotations of particle or wave components of the pulse in the transmission line.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: July 21, 2009
    Assignees: Universite Libre de Bruxelles, University of Bristol
    Inventors: Sandu Popescu, Serge Alexandre Massar
  • Reducing Depolarisation
    Publication number: 20080056729
    Abstract: The present invention provides a method for reducing spreading of a pulse in a transmission line, said spreading being as a result of polarization mode dispersion, comprising inducing predetermined polarization rotations of particle or wave components of the pulse in the transmission line.
    Type: Application
    Filed: August 12, 2005
    Publication date: March 6, 2008
    Applicant: UNIVERSITY OF BRISTOL
    Inventors: Sandu Popescu, Serge Massar
  • Handling information in a noisy environment
    Patent number: 7266303
    Abstract: A method and system for handling information in a noisy environment in the form of at least one information carrying mode is disclosed. A plurality of encoded modes are generated by linear transformation of the information carrying mode, said encoded modes being provided on respective independent channels. The encoded modes are linearly combined to generate at least one decoded mode. A set of receiver channels is provided for receiving the decoded mode wherein one of said set of receiver channels is designated as a useful channel, and a useful signal is supplied as the decoded mode if it is received on the useful channel an discarded if it is received on the other receiver channels of the set, wherein the useful signal represents said information substantially uncorrupted by noise. The technique is applicable to quantum, classical or mesoscopic environments. The invention also provides a method and system for generating correlated states using a similar filtration technique.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: September 4, 2007
    Assignee: Universite Libre de Bruxelles
    Inventors: Noah Linden, Sandu Popescu, Nicholas Robert Gisin, Serge Alexandre Massar
  • Handling information in a noisy environment
    Publication number: 20040042715
    Abstract: A method and system for handling information in a noisy environment in the form of at least one information carrying mode is disclosed. A plurality of encoded modes are generated by linear transformation of the information carrying mode, said encoded modes being provided on respective independent channels. The encoded modes are linearly combined to generate at least one decoded mode. A set of receiver channels is provided for receiving the decoded mode wherein one of said set of receiver channels is designated as a useful channel, and a useful signal is supplied as the decoded mode if it is received on the useful channel an discarded if it is received on the other receiver channels of the set, wherein the useful signal represents said information substantially uncorrupted by noise. The technique is applicable to quantum, classical or mesoscopic environments. The invention also provides a method and system for generating correlated states using a similar filtration technique.
    Type: Application
    Filed: September 29, 2003
    Publication date: March 4, 2004
    Inventors: Noah Linden, Sandu Popescu, Nicolas Robert Gisin, Serge Alexandre Massar