Patents by Inventor Harald Weinfurther

Harald Weinfurther 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).

  • Device and method for use in quantum crytography
    Patent number: 7400724
    Abstract: The present invention relates to a quantum cryptography system for the secure key generation, especially with signal sources and analysis channels. The signal sources are arranged spatially separated in such a manner that the wave fronts of light signals emitted by them superimpose partially at the input of the quantum channel. The analysis channels are arranged in such a manner that the wave front of the light signals coming from the quantum channel are split up spatially and at least two of the parts are analyzed in a quantum mechanical state.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: July 15, 2008
    Assignee: Ludwig-Maximilians-Universitat Muchen
    Inventors: Harald Weinfurther, Christian Kurtsiefer
  • Device and method for use in quantum crytography
    Publication number: 20040156502
    Abstract: The present invention relates to a quantum cryptography system for the secure key generation, especially with signal sources and analysis channels. The signal sources are arranged spatially separated in such a manner that the wave fronts of light signals emitted by them superimpose partially at the input of the quantum channel. The analysis channels are arranged in such a manner that the wave front of the light signals coming from the quantum channel are split up spatially and at least two of the parts are analyzed in a quantum mechanical condition.
    Type: Application
    Filed: April 9, 2004
    Publication date: August 12, 2004
    Inventors: Harald Weinfurther, Christian Kurtsiefer