Professor Satoshi Iwamoto (Research Center for Advanced Science and Technology) and Specially Appointed Associate Professor Yasutomo Ota (Associate Professor, Faculty of Science and Engineering, Keio University), in collaboration with Professor Toshihiko Baba and colleagues at Yokohama National University and Associate Professor Tomoki Ozawa at Tohoku University, have successfully demonstrated for the first time using silicon photonics a unique optical phenomenon in a frequency sequence called an “synthetic dimension,” which is expected to have highly functional optical properties. This is a significant first step in the application of the new concept of electrical conduction in topological insulators, which won the 2016 Nobel Prize in Physics, to the field of photonics. This will lead to the realization of highly functional optical integrated circuits in the future. The paper was published in Science Advances on January 28, 2011.
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