"replace a roomful of equipment... entangling photons in complex ways... hundred times thinner than paper... light passes through ultrathin sample of glass covered in nanoscale structures made of gallium arsenide... scrambles all the optical fields... pair of entangled photons at different wavelengths emerge from the sample in the same direction as the incoming laser beam... complex webs of entangled photons several pairs all entangled together indistinguishable from each other"
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