Patents by Inventor Alexandre Soujaeff

Alexandre Soujaeff 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 communication apparatus, quantum communication system and quantum communication method
    Patent number: 8270841
    Abstract: The present invention is directed to realize a stable and highly-efficient quantum communication without being influenced by the jitter of the heralding signal. In regard to the quantum encryption transmitting apparatus 200, the pulse-driven heralded single-photon source 201 generates a photon pair, outputs one photon of the photon pair, and outputs the other photon of the photon pair as a heralding signal. The timing adjuster 202 synchronizes the heralding signal with a clock signal for pulse driving the pulse-driven heralded single-photon source 201, and outputs as a trigger signal. The quantum communication modulating unit 203 implements the signal modulation to a quantum signal, in timing with the trigger signal, and transmits the quantum signal to the quantum encryption receiving apparatus 300 via the quantum communication path 101. The heralding signal transmitting unit 205 transmits the heralding signal to the quantum encryption receiving apparatus 300 via the heralding signal communication path 102.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: September 18, 2012
    Assignees: Mitsubishi Electric Corporation, National University Corporation Hokkaido University
    Inventors: Tsuyoshi Nishioka, Shigeki Takeuchi, Alexandre Soujaeff, Toshio Hasegawa, Junnichi Abe
  • QUANTUM COMMUNICATION APPARATUS, QUANTUM COMMUNICATION SYSTEM AND QUANTUM COMMUNICATION METHOD
    Publication number: 20100226659
    Abstract: The present invention is directed to realize a stable and highly-efficient quantum communication without being influenced by the jitter of the heralding signal. In regard to the quantum encryption transmitting apparatus 200, the pulse-driven heralded single-photon source 201 generates a photon pair, outputs one photon of the photon pair, and outputs the other photon of the photon pair as a heralding signal. The timing adjuster 202 synchronizes the heralding signal with a clock signal for pulse driving the pulse-driven heralded single-photon source 201, and outputs as a trigger signal. The quantum communication modulating unit 203 implements the signal modulation to a quantum signal, in timing with the trigger signal, and transmits the quantum signal to the quantum encryption receiving apparatus 300 via the quantum communication path 101. The heralding signal transmitting unit 205 transmits the heralding signal to the quantum encryption receiving apparatus 300 via the heralding signal communication path 102.
    Type: Application
    Filed: August 4, 2006
    Publication date: September 9, 2010
    Applicants: Mitsubishi Electric Corporation, National University Corp. Hokkaido University
    Inventors: Tsuyoshi Nishioka, Shigeki Takeuchi, Alexandre Soujaeff, Toshio Hasegawa, Junnichi Abe