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Conferences > CLEO_QELS > 2022 > FTu5J > FTu5J.3

Floquet topological quadrupole in photonic crystals protected by space-time symmetry

Jicheng Jin, Li He, Jian Lu, Eugene J. Mele, and Bo Zhen

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Abstract

We present that a space-time screw symmetry can be preserved in periodically driven optical nonlinear materials. Such symmetry can protect a high-order topological phase, which is demonstrated with a photonic crystal.

© 2022 The Author(s)

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