1. Centre for Quantum Computation and Communication Technology, Australian Research Council Centre of Excellence
2. School of Electrical Engineering and Telecommunications UNSW Sydney New South Wales 2052 Australia
3. Quantronics Group SPEC CEA CNRS Université Paris‐Saclay CEA‐Saclay Gif‐sur‐Yvette 91191 France
4. School of Physics University of Melbourne Melbourne Victoria 3010 Australia