1. Atomic Molecular and Optical Physics Research Group, Institute for Advanced Study in Technology, Ton Duc Thang University, Ho Chi Minh City, Vietnam
2. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
3. Division of Theoretical Physics, Dong Thap University, Cao Lanh 870000, Vietnam
4. Faculty of of Physics, University of Education, Hue University, Hue, 530000, Vietnam