Thouless pumping of light is observed in continuous quasi-periodic photorefractive lattices, with the quantized beam displacement predicted by the Chern numbers of periodic approximants.
Thouless, Physical Review B 27, 6083 (1983)
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Observation of Thouless pumping of light in quasiperiodic photonic crystals
Thouless pumping of light is observed in continuous quasi-periodic photorefractive lattices, with the quantized beam displacement predicted by the Chern numbers of periodic approximants.