He is known for his work on organic polaritons: hybrid light-matter particles that exist in optical microcavities. He has produced a number of important results in this field such as demonstrating the first organic polariton laser and observing room-temperature superfluidity of exciton-polaritons. He also pioneered some of the first observations of the quantum behaviour of surface plasmon-polaritons. At Polytechnique, Prof. Kéna-Cohen’s group is actively working on the development of new families of optoelectronic devices for applications in quantum information, biophotonics and solar energy. He obtained his PhD in 2010 at Princeton University under the supervision of Stephen Forrest and prior to joining Polytechnique, he held a Junior Research Fellowship at Imperial College London.