1. Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
2. Institute of Quantum Systems (IQS), Chungnam National University, Daejeon 34134, Republic of Korea
3. Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
4. Agency for Defense Development (ADD), Daejeon 34186, Republic of Korea