1. School of Mathematics and Physics The University of Queensland Brisbane 4072 Australia
2. Institute of Physics and Astronomy University of Potsdam Karl‐Liebknecht‐Str. 24‐25 D‐14476 Potsdam‐Golm Germany
3. Centre for Organic Photonics and Electronics (COPE) School of Mathematics and Physics and School of Chemistry and Molecular Biosciences The University of Queensland Brisbane 4072 Australia
4. School of Physics and Technology Wuhan University Wuhan Hubei Province 430072 P. R. China
5. Department of Physics Swansea University Singleton Park Swansea SA2 8PP Wales UK
6. Centre for Engineered Quantum Systems (EQuS) School of Mathematics and Physics The University of Queensland Brisbane 4072 Australia