Funding for this research was provided by:
the Start-up Funds for Talent Introduction and Scientific Research of Changsha University 2015 (SF1504)
the Scientific Research Project of Hunan Province Department of Education (16C0134)
the Scientific Research Project of Hunan Province Department of Education (17C0133)
the Natural Science Foundation of Hunan Province (2017JJ3346)
the Natural Science Foundation of Hunan Province (14JJ2134)
Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education (QSQC1403)
the Project of Science and Technology Plan of Changsha (ZD1601071)