‘Molecules’ made of light possible: Researchers
Two years ago, collaborators from Harvard University, the California Institute of Technology and the Massachusetts Institute of Technology found a way to bind two photons together so that one would sit right atop the other, superimposed, as they travel.
Now, theoretical physicists from the US National Institute of Standards and Technology (NIST) and University of Maryland have shown that by tweaking a few parameters of the binding process, photons could travel side by side, a specific distance from each other.
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