Einstein-Bohr gedanken experiment performed at the molecular level

French, Swedish and Japanese teams managed to realize, for the first time, a molecular photoionization experiment illustrating a gedanken experiment first proposed by Albert Einstein and Niels Bohr in their discussion on whether the elementary particles constituting our surrounding world should be seen as particles or waves. Challenging the emerging understanding of quantum physics, this original experiment continues one of the richest public debates in the history of Science, which has already led to several Nobel Prizes, including the one awarded in 2012 to Serge Haroche. Their result is published online on Nature Photonics the 1st December 2014.