Weak disorder in photonic Chern insulators induces topologically trivial impurity bands via coupled defect states, forming reciprocal necklace channels that disrupt unidirectional chiral edge transport despite preserved global topology.
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Fragility of Unidirectional Transport in Weakly Disordered Photonic Chern Insulators
Weak disorder in photonic Chern insulators induces topologically trivial impurity bands via coupled defect states, forming reciprocal necklace channels that disrupt unidirectional chiral edge transport despite preserved global topology.