Patents by Inventor GUI-LU LONG

GUI-LU LONG 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).

  • Optical path system for quantum communication and quantum communication method
    Patent number: 12068790
    Abstract: Disclosed are an optical path system for quantum communication and a quantum communication method. The optical path system for quantum communication includes a light source module, an intensity and polarization modulation module, a polarization maintaining interference ring, a phase and intensity modulation module, a first isolator, a first polarization beam splitter, a second isolator, a beam splitter, a second polarization beam splitter, a second phase modulator, and a 90-degree Faraday rotator mirror. An optical signal may pass through a first polarization beam splitter, bypass a phase and intensity modulation module, and directly reach a polarization maintaining interference ring, thereby solving a problem of series mode interference in an optical signal circuit, and greatly improving a modulation speed of the circuit.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: August 20, 2024
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Gui-Lu Long, Liu-Guo Yin, Ruo-Yang Qi, Hao-Ran Zhang
  • OPTICAL PATH SYSTEM FOR QUANTUM COMMUNICATION AND QUANTUM COMMUNICATION METHOD
    Publication number: 20220321234
    Abstract: Disclosed are an optical path system for quantum communication and a quantum communication method. The optical path system for quantum communication includes a light source module, an intensity and polarization modulation module, a polarization maintaining interference ring, a phase and intensity modulation module, a first isolator, a first polarization beam splitter, a second isolator, a beam splitter, a second polarization beam splitter, a second phase modulator, and a 90-degree Faraday rotator mirror. An optical signal may pass through a first polarization beam splitter, bypass a phase and intensity modulation module, and directly reach a polarization maintaining interference ring, thereby solving a problem of series mode interference in an optical signal circuit, and greatly improving a modulation speed of the circuit.
    Type: Application
    Filed: June 20, 2022
    Publication date: October 6, 2022
    Inventors: GUI-LU LONG, LIU-GUO YIN, RUO-YANG QI, HAO-RAN ZHANG