KUO HAI1,2, YUNRONG LUO1,2, GUISHU CHONG3, HAO CHEN1, WENHUA HAI1,2∗ 1Department of Physics and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081, China 2Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University 3School of Physics and Microelectronics, Hunan University, Changsha 410082, China