ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,721, issued on May 13, was assigned to ColdQuanta Inc. (Boulder, Colo.).

"Atomic clock with enhanced oscillator regulation" was invented by Evan Salim (Lafayette, Colo.), Judith Olson (Northglenn, Colo.), Andrew Kortyna (Boulder, Colo.), Dina Genkina (Hyattsville, Md.) and Flavio Cruz (Superior, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rubidium optical atomic clock uses a modulated 778 nanometer (nm) probe beam and its reflection to excite rubidium 87 atoms, some of which emit 758.8 nm fluorescence as they decay back to the ground state. A spectral filter rejects scatter of the 778 nm probe beams while transmitting the 775.8 nm fluores...