1. Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
2. Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
3. Centre of Excellence for Quantum Computation and Communication Technology, School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
4. Centre of Excellence for Quantum Computation and Communication Technology, Research School of Physics and Engineering, Australian National University, Canberra, Australian Central Territory 0200, Australia
5. CAS Key Laboratory of Microscale Magnetic Resonance, School of Physical Sciences and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230 026, People’s Republic of China