1. Department of ComputerScience and Information Engineering, National Chi Nan University, Nantou, Taiwan
2. Department of Computer Science and Information Engineering, National Chi Nan University, Nantou, Taiwan
3. Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, USA
4. Department of Physics, and Center for Quantum Science and Engineering, National Taiwan University, Taipei, Taiwan
5. Department of Electronics Engineering, Chang Gung University, Taoyuan, Taiwan