This study was financially supported by the National Key Research&Development Program of China(Nos.2019YFA0308500,2018YFA0305800 and 2016YFA0202300);the National Natural Science Foundation of China(Nos.61888102 and 61925111);the Strategic Priority Research Program of Chinese Academy of Sciences(Nos.XDB30000000 and XDB28000000);the CAS Key Laboratory of Vacuum Physics.
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