**Acknowledgements**

This work was also supported by the Ministry of Science and Technology of the Republic of China, Taiwan (Grant nos. 107-2119-M-009-010-MY2, 106-2119-M-009-013-FS, and 106-2628-M-009-003-MY3). Besides, this work was financially supported by the Center for Emergent Functional Matter Science of National Chiao Tung University from the Featured Areas Research Center Program and the Research Team of Photonic Technologies and Intelligent Systems at NCTU within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.
