1. Department of Electronic Engineering, Kwangwoon University, Seoul 01897, South Korea
2. Nano Device Application Center, Kwangwoon University, Seoul 01897, South Korea
3. Quantum Technology Research Department, Electronics and Telecommunications Research Institute, Daejeon 34129, South Korea
4. Nano Optics Laboratory, Department of Physics, Korea University, Seoul 02841, South Korea
5. Department of Quantum Science and Technology, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia