1. State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai 200062 China
2. Department of Physics Henan Normal University Xinxiang 453007 China
3. NYU‐ECNU Institute of Physics New York University at Shanghai Shanghai 200062 China
4. Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 China
5. Department of Physical Electronics School of Electrical Engineering Faculty of Engineering Tel Aviv University Ramat Aviv Tel Aviv 6997801 Israel
6. Instituto de Alta Investigación Universidad de Tarapacá Casilla 7D Arica1000000 Chile