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  • RESEARCH HIGHLIGHT

A quantum light source outshines a competitor 1,000-fold

A small device churns out pairs of entangled photons with the help of an unusual material.
A photonic microring resonator .

Micrometre-scale rings made of aluminium gallium arsenide (model ring above) can produce entangled photons at a rapid clip. Credit: T. J. Steiner et al./Phys. Rev. X (CC BY 4.0)

A device uses an unconventional material to produce ‘entangled’ photons, a valued commodity for quantum technologies, more than 1,000 times faster than a competing approach.

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Nature 591, 348 (2021)

doi: https://doi.org/10.1038/d41586-021-00636-5

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