Born in 1968 in Palo Alto, California, USA, Prof. Mitchell earned his Ph.D. in Physics from the University of California at Berkeley in 1999 with a thesis on the quantum optics of photon-photon interactions. In the group of Serge Haroche at the Ecole Normale Superieure he advanced cavity quantum electrodynamics with cold atoms and microfabricated optical resonators. At Reed College he built the first diode-laser based entangled photon sources, and in the group of Aephraim Steingberg in Toronto he demonstrated the first multi-photon NooN states and quantum process tomography. He joined ICFO in 2004 and ICREA in 2011. His leads the research group Atomic Quantum Optics at ICFO and coordinates the Qauntum Technologies Emergent Community in Catalonia (QuantumCAT). He was awarded an ERC Starting Grant in 2011, an ERC Proof-of-Concept Grant in 2016, and has been recognized with a Vanguardia de la Ciencia award in 2012, Ehrenfest Prize and Kavli Publication Prize in 2016.