ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,532, issued on March 17, was assigned to IONQ INC. (College Park, Md.).
"Fabricating photonic devices from bulk substrate" was invented by Zhuoxian Wang (Cambridge, Mass.) and Bartholomeus Johannes Machielse (Somerville, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fabrication process for fabricating, from a bulk substrate material, devices configured to interface with light is described. Sequential directionally-dependent etching process steps may be used to form interior features of a given device prior to undercutting remaining portions of the bulk substrate material in order to locally isolate the formed device from the remaining port...