US Patent Issued to XANADU QUANTUM TECHNOLOGIES on March 11 for "Photon number resolving methods and systems" (Canadian Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,026, issued on March 11, was assigned to XANADU QUANTUM TECHNOLOGIES INC. (Toronto).

"Photon number resolving methods and systems" was invented by Lars Madsen (Toronto), Fabian Laudenbach (Toronto) and Jonathan Lavoie (Toronto).

According to the abstract* released by the U.S. Patent & Trademark Office: "A photon-number resolving (PNR) method and system are described. A PNR detector is calibrated to generate a characteristic pulse plot for each of a plurality of unique photon numbers. A generic tail portion is also stored. A signal is then detected through the PNR detector. The signal includes at least a first pulse and a second pulse, where the second pulse at least partially ov...