This work was financially supported by the National Basic Research Program of China (No. 2016YFA0200103), the National Natural Science Foundation of China (Nos. 61527814, 51702225, 51432002, 61474109, 51290272, 51502007, 11474274, and 51672007), the National Equipment Program of China (No. ZDYZ2015-1), Beijing Municipal Science and Technology Planning Project (Nos. Z181100004818002 and Z191100000819004), and Beijing Natural Science Foundation (No. 4182063).
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