Michel Planat was a researcher at the National Center of Scientific Research in France from 1982 to 2018. From 1980 to 2001, he did research about nonlinear waves in piezoelectric crystals and 1/f noise in quartz resonators. He established links between 1/f noise and number theory. He did research about Riemann hypothesis. He discovered Ramanujan sums signal processing. From 2002 to 2018, he was interested by quantum information theory with work about mutually unbiased bases, quantum entanglement and contextuality and quantum computing, using mathematical tools such as finite geometries, number theory, ‘dessins d’enfants’ and free group theory. Since 2019, he collaborates with QGR group about topological quantum computing from three- and four-manifolds with the goal of establishing bridges between quantum computing and quantum gravity.
His detailed research is available at here.