US Patent Issued to NEC, National Institute of Information and Communications Technology, National University Corporation Hokkaido University, THE UNIVERSITY OF TOKYO on Dec. 2 for "Photon detection device, reception device, quantum key distribution system, and method for detecting quantum signal" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,614, issued on Dec. 2, was assigned to NEC Corp. (Tokyo), National Institute of Information and Communications Technology (Koganei, Japan), National University Corporation Hokkaido University (Sapporo, Japan) and THE UNIVERSITY OF TOKYO (Tokyo).

"Photon detection device, reception device, quantum key distribution system, and method for detecting quantum signal" was invented by Ken-ichiro Yoshino (Tokyo), Mikio Fujiwara (Tokyo), Akihisa Tomita (Hokkaido, Japan), Masato Koashi (Tokyo), Masahiro Takeoka (Tokyo) and Masahide Sasaki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object is to prevent eavesdropping in quantum key distribution. A p...