Funding for this research was provided by:
Natural Science Foundation of Anhui Province (1508085QF139)
National Natural Science Foundation of China (11575001)
National Natural Science Foundation of China (61601002)
CAS Key Laboratory of Quantum Information (KQI201701)
Article History
Received: 2 January 2020
Accepted: 13 March 2020
First Online: 26 March 2020