Patents by Inventor Charles Ci Wen LIM

Charles Ci Wen LIM 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).

  • Publication number: 20130016835
    Abstract: For distributing a sequence of symbols, an emitter station transmits to a receiver station quantum systems through a quantum channel. Each of the quantum systems belongs to a set of at least two non-orthogonal quantum states and comprises a group of at least two weak coherent states of an electromagnetic field. Each weak coherent state is in a time bin of duration t. Centers of neighboring weak coherent states in a group are separated by a time T1, with T1 greater than t. Centers of neighboring weak coherent states in adjacent quantum systems are separated by a time T2, with T2 greater than t. In addition, any two weak coherent states separated by T1+T2 are phase coherent. The receiver station comprises an optical subsystem configured to check, for received quantum systems, phase coherence of two weak coherent states of time bins separated by T1+T2.
    Type: Application
    Filed: July 13, 2011
    Publication date: January 17, 2013
    Applicant: UNIVERSITE DE GENEVE
    Inventors: Hugo ZBINDEN, Nino WALENTA, Charles Ci Wen LIM