1. Department of Computer Science, University College London, London, UK
2. Departamento de Física Aplicada II, Universidad de Sevilla, Sevilla E-41012, Spain
3. Instituto Carlos I de Física Teórica y Computacional, Universidad de Sevilla, Sevilla E-41012, Spain
4. Department of Psychological Sciences, Purdue University, West Lafayette, IN, USA
5. Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, Poznań 61-614, Poland
6. Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore