Long-range next-nearest-neighbor couplings in a Harper-Hofstadter photonic lattice enable broadband, topologically protected slow-light and light-stopping across multiple band gaps with counter-chiral edge states.
Baba, Slow light in photonic crystals, Nature Photonics2, 465 (2008)
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Multiband topological group-velocity control from slow light to light stopping
Long-range next-nearest-neighbor couplings in a Harper-Hofstadter photonic lattice enable broadband, topologically protected slow-light and light-stopping across multiple band gaps with counter-chiral edge states.