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Non-Hermitian dynamics of light near exceptional points

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The non-Hermitian concepts, including PT symmetry-breaking, of judiciously utilizing both optical gain and loss in metaphotonic structures have recently emerged as a new paradigm to control the propagation of light. We present experimental realizations of non-Hermitian dynamics near exceptional points (EPs) both in electric resonators and silicon-photonic waveguides that create dynamically encircling an EP and consequent time-asymmetric transmission of broadband signals.

© 2018 Optical Society of Japan

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