Yuhao Kang, Xiaojun Cheng, X. Ni, A. Khanikaev, A. Genack
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Observation of Valley-based Transport for Valley-pseudospin Polarized Photonic Edge State
We demonstrate the photonic valley-pseudospin polarized edge state experimentally. The contrast between transmission spectra demonstrates the conservation of valley degree of freedom at the Y-junction between domains emulating quantum valley-Hall and spin-Hall effects.