1. Delft Institute of Applied Mathematics, Delft University of Technology, The Netherlands.
2. Korteweg-de Vries Institute for Mathematics, University of Amsterdam, The Netherlands
3. QuTech, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
4. QuSoft, CWI, Science Park 123, 1098 XG Amsterdam, The Netherlands
5. Networked Quantum Devices Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan