This activity, led by Michel Planat, has firstly concerned the arithmetic and the geometry of the observable commutation (for the qubits and multiple qubits of the general Pauli group) and the quantum computing applications.

Deep ties have been established between qubits and prime numbers Riemann theory, then between quantum paradoxes (of Bell and Kochen-Specker) and topological and algebraic approach of Grothendieck called "Dessins d'enfants".

For a continuous description of the works : http://www.researchgate.net/profile/Michel_Planat

Some of works lead to courses at SEAMS SCHOOL : algebra and their applications, Kuala Lumpur, 2015, available here : http://einspem.upm.edu.my/seams2015/