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Photons Pair Up Like Superconducting Electrons

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Photons of light

Photons of light pair up as they travel through water, just like electrons in a superconductor.

Credit: GIPhotoStock/SPL

Superconductivity—a phenomenon in which electrons can travel through certain materials with zero resistance—has revolutionized parts of medicine, travel and science. Now, an intriguing experiment has seen the same behaviour that underlies superconductivity—but in particles of light.

From Nature
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