1. State Key Laboratory for Magnetic
Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic
Resonance, and Key Laboratory of Magnetic Resonance in Biological
Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
2. Hefei National Laboratory for
Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China (USTC),
Hefei 230026, China