The experiment showed that Bohr was definitely correct when he argued for complementarity, and that Einstein had got it wrong ...

However, a new study attempts to fill this gap. It suggests that classical interference patterns arise from specific quantum states of light, called bright and dark states.

The new experiment is a twist on a 220-year-old demonstration, in which light shines through two slits in a screen to create a unique diffraction pattern across space, where the peaks and troughs ...