1. Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
2. Bright Quantum Incorporated, Daejeon 34133, Republic of Korea
3. Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea
4. School of Nano Convergence Technology, Hallym University, Chuncheon 24252, Republic of Korea
5. Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
6. Center for Research Equipment, Korea Basic Science Institute, Daejeon 34133, Republic of Korea