ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,732, issued on Nov. 11, was assigned to The Board of Trustees of the University of Illinois (Urbana, Ill.).

"Precision quantum-interference-based non-local contactless measurement" was invented by Paul G Kwiat (Savoy, Ill.), Colin P Lualdi (Weston, Mass.), Spencer Johnson (El Paso, Texas) and Kristina Meier (Urbana, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems are provided to generate and use pairs of highly nondegenerate frequency-entangled photons for Hong-Ou-Mandel interferometric measurement of local or remote samples. The use of highly nondegenerate frequency-entangled photon pairs enables ultra-high spatial resolutio...