Patents by Inventor Francois ROUMESTAN

Francois ROUMESTAN 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).

  • CONTINUOUS VARIABLE QUANTUM KEY DISTRIBUTION
    Publication number: 20220166612
    Abstract: An apparatus for random key transmission comprising a laser (101) configured to generate a coherent source optical signal; a quantum random number generator, QRNG, (105) configured to generate random bits (R1); an electro-optical modulator (107) configured to modulate the coherent source optical signal to generate a modulated optical signal including Quadrature Phase Shift Keying, QPSK, pilot symbols temporally multiplexed with quantum key distribution, QKD, symbols representing the random bits, wherein quadratures values of the modulated optical signal follow a modulation map, wherein the modulation map is a quadrature amplitude modulation, QAM, based Probabilistic Constellation Shaping, PCS, modulation map defining a mapping function for the random bits.
    Type: Application
    Filed: November 18, 2021
    Publication date: May 26, 2022
    Inventors: Amirhossein GHAZISAEIDI, Francois ROUMESTAN