US Patent Issued to NTT on Dec. 30 for "Quantum key distribution system, quantum key distribution method and quantum key distribution program" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,972, issued on Dec. 30, was assigned to NTT Inc. (Tokyo).

"Quantum key distribution system, quantum key distribution method and quantum key distribution program" was invented by Atsushi Taniguchi (Musashino, Japan), Hirokazu Takahashi (Musashino, Japan) and Hideki Nishizawa (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transmission device (1) includes a modulation unit (14) that modulates photons with a predetermined data pattern, a synchronization signal generation unit (12) that generates a frame synchronization signal of a random number data pattern, an identification signal generation unit (13) that divides the frame into a ...