Étienne Klein is a French physicist, research director at the French Alternative Energies and Atomic Energy Commission (CEA) and radio producer. He is a professor at the Ecole Centrale in Paris and runs the CEA’s Materials Sciences Research Laboratory (LARSIM).
He produces and presents “La Conversation Scientifique” on France Culture (radio) and is very much involved in popularizing the issues raised by contemporary physics – particularly quantum and particle physics.