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Ultracold matter

Ultracold matter

New optical device absorbs just one photon

25 Nov 2016
Artist's impression of the single photon device
Lone photon: the new device will extract exactly one photon from a beam of light. (Courtesy: Christoph Tresp)
Physicists in Germany have created a new optical device that can absorb exactly one photon. They say

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Sophia Chen is a freelance writer based in Tucson, Arizona
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