Researchers in Bonn have cooled photons to a temperature where they spontaneously condense, forming a ‘photonic Bose-Einstein condensate’.
So, what’s it good for?
This photonic Bose-Einstein condensate is a completely new source of light that has characteristics resembling lasers. But compared to lasers, they have a decisive advantage, “We are currently not capable of producing lasers that generate very short-wave light – i.e. in the UV or X-ray range,” explained Jan Klärs. “With a photonic Bose-Einstein condensate this should, however, be possible.”