Quantum 'paparazzi' film photons in the act of pairing up
Warsaw, Poland (SPX) Apr 24, 2015 - In the quantum world of light, being distinguishable means staying lonely. Only those photons that are indistinguishable can wind up in a pair, through what is called Hong-Ou-Mandel interference. This subtle quantum effect has been successfully imaged for the first time by two doctoral students from the Faculty of Physics at the University of Warsaw. Physicists have long known that photons ... more
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