CONTINUOUS VARIABLE QUANTUM KEY DISTRIBUTION

CONTINUOUS VARIABLE QUANTUM KEY DISTRIBUTION

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 (Ri); an electro-optical modulator (107) configured to modulate the coherent source optical sig...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ROUMESTAN, François, GHAZISAEIDI, Amirhossein
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung: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 (Ri); 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.