A small, flat surface glows green, mounted to a circular laboratory apparatus.…Scientists at Sandia National Laboratories and Max Planck Institute for the Science of Light have reported on a device that could replace a roomful of equipment used to entangle photons…

…Entanglement helps protect delicate quantum information and correct errors in quantum computing…

…The new device “scrambles all the optical fields,” said Sandia senior scientist Igal Brener, an expert in a field called nonlinear optics who led the Sandia team. Occasionally, he said, a pair of entangled photons at different wavelengths emerge from the sample in the same direction as the incoming laser beam…

Image: Green laser light illuminates a metasurface that is a hundred times thinner than paper, that was fabricated at the Center for Integrated Nanotechnologies. Photo by Craig Fritz).

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