US Patent Issued to NEC on Sept. 23 for "Quantum key delivery system, quantum key delivery method, and storage medium" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,201, issued on Sept. 23, was assigned to NEC Corp. (Tokyo).

"Quantum key delivery system, quantum key delivery method, and storage medium" was invented by Tetsuo Kawakami (Tokyo) and Wakako Yasuda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A quantum key delivery system in which a first transmission device phase modulates a first polarization component of two orthogonal polarization components in transmitted light and modulates a second polarization component, which is the other polarization component, into a signal indicating the second random number sequence, based on a first random number sequence indicating the bit sequence to be tran...