Physicists Made Entangled Photons Out of Ordinary Sunlight, Which Was Supposed to Require a Laser
A team in Ottawa and Erlangen put a window sized lens in the sun, funnelled the light down a glass cone into a fibre the width of a hair, and got entangled photons at ninety four per cent fidelity. The Sun is not supposed to be able to do this.
Aug 25, 2026



























































