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  • RESEARCH HIGHLIGHT

How to ensure a quantum key arrives on time

Adjustment to photons’ wavelengths could make their transmission through conventional fibre-optic cables more reliable.
A bird’s eye view of an entangled photon-pair source built by researchers at the National University of Singapore and Singtel

A laser (grey and black box, bottom left) emits light that is converted into pairs of entangled photons suitable for generating a quantum key. Credit: National University of Singapore

Quantum encryption could become more efficient thanks to a method for better coordinating the photons at the heart of the process.

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Nature 568, 278 (2019)

doi: https://doi.org/10.1038/d41586-019-01148-z

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