1. Department of Electronic Science
2. Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance
3. Xiamen University
4. Xiamen 361005
5. China
6. School of Computer and Information Engineering
7. Xiamen University of Technology
8. Xiamen 361024
9. Shanghai Key Laboratory of Magnetic Resonance
10. Department of Physics
11. East China Normal University
12. Shanghai 200062
13. Department of Chemistry and Molecular Biology and Swedish NMR Centre
14. University of Gothenburg
15. Gothenburg 40530
16. Sweden