A special session of the working group will take place on the afternoon of Wednesday, January 21, 2026, starting at 1:45 pm in the LJLL seminar room (15-16-309). The goal is to discuss the possible links between quantum computing and preconditioning methods. Indicative program : 1) Quantum context ; 2) Decomposition Domain Methods (DDM), Pierre Marchand (POEMS, Inria) ; 3) Debrief.