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Quantum optics

Quantum optics

Photons created in a superposition of two colours

29 Nov 2016 Hamish Johnston
Illustration of a photon that is both red and blue
Red and blue: a photon of two colours has been made. (Courtesy: iStock/-strizh-)
Individual photons have been put into a quantum superposition of two different colours by a team of

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Hamish Johnston is an online editor of Physics World
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