In a milestone for scalable quantum technologies, scientists from Boston University, UC Berkeley, and Northwestern University have reported the world’s first electronic–photonic–quantum system on a chip, according to a study published in Nature Electronics . The system combines quantum light sources and stabilizing electronics using a standard 45-nanometer semiconductor manufacturing process to produce reliable streams of correlated photon pairs (particles of light)—a key resource for emerging quantum technologies. The advance paves the way for mass-producible “quantum light factory” chips and large-scale quantum systems built from many such chips working together.
“Quantum computing, communication, and sensing are on a decades-long path from concept to reality,” says Miloš Popović, associate professor of electrical and computer engineering at BU and a senior author on the study. “This is a small step on that path—but an important one, because it shows we can build repeatable, controllable quantum systems in commercial semiconductor foundries.”
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