ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,557, issued on April 29, was assigned to University of Maryland, College Park (College Park, Md.) and Government of the United States of America, as Represented by the Secretary of Commerce (Gaithersburg, Md.).

"Ultra-low-noise, on-chip quantum devices" was invented by Ivan A. Burenkov (Gaithersburg, Md.) and Sergey V. Polyakov (Gaithersburg, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A quantum EIT-based optical switch includes a first waveguide, linear or nonlinear, a separate nonlinear waveguide evanescently coupled to the first waveguide, and a pump coupled to the nonlinear waveguide. A quantum STIRAP-based optical transduction device, whi...