We acknowledge financial support by Labex PALM, CNRS through Institut de Physique, GDR Quantum Information, Fondations & Applications and GDR mesoscopic physics, European program Scalelqit and CEA-IRAMIS.
We acknowledge financial support by Labex PALM, CNRS through Institut de Physique, GDR Quantum Information, Fondations & Applications and GDR mesoscopic physics, European program Scalelqit and CEA-IRAMIS.