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University of Basel

28 January 2021

Physicists develop record-breaking source for single photons

graphical representation of the quantum dot as a bulge emitting photons into an optical fiber.
The new single-photon source is based on excitation of a quantum dot (shown as a bulge on the bottom left), which then emits photons. A micro-cavity ensures that the photons are guided into an optical fiber and emerge at its end. (Figure: University of Basel, Department of Physics)

Researchers at the University of Basel and Ruhr University Bochum have developed a source of single photons that can produce billions of these quantum particles per second. With its record-breaking efficiency, the photon source represents a new and powerful building-block for quantum technologies.

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