Neat News 779 (added 2018-02-17)

Interacting Photons

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Normally photons do not react with each other, for instance, two beams of light shine without interfering with each other. Using laser light and very cold rubidium, scientists managed a group of three photons to interact and form a particle with a non-zero mass that travels 100,000 times slower than standard photons. The interacting photons may be used to build quantum computers, for instance.

News seen at: SciencDaily - Top Science News