*R. Barends¹ (1. Juelich Research Center)

*Attila Geresdi¹ (1. Chalmers University of Technology)

*Ivan Grytsenko¹, Oleksiy Rybalko³, Erika Kawakami^1,2 (1. RIKEN Center for Quantum Computing, RIKEN, Wako, 351-0198, Japan, 2. Cluster for Pioneering Research, RIKEN, Wako, 351-0198, Japan, 3. B. Verkin Institute for Low Temperature Physics and Engineering of the NAS of Ukraine, Kharkiv, 61103, Ukraine)

*Marco Marin Suarez¹, Joonas T. Peltonen¹, Dmitry S. Golubev¹, Jukka P. Pekola¹ (1. Pico group, QTF Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 15100, FI-00076 Aalto, Finland)