Together with KFKI colleagues , he carried out a famous low - intensity interference experiment , a quantum - mechanical process in which low - intensity photon beams interfere with themselves -- .
The experiments originally sought to refute this possibility .
Together with KFKI colleagues , he carried out a famous low - intensity interference experiment , a quantum - mechanical process in which low - intensity photon beams interfere with themselves -- although the experiments originally sought to refute this possibility .