Spontaneous topological pumping in non-Hermitian systems

Abstract

We introduce modulational instability in non-Hermitian systems to study state conversion of topological edge states. We show that state conversion in non-Hermitian systems leads to topological pumping, which is a way of transferring topological edge state from one edge to the opposite edge. In contrast to Hermitian systems, topological pumping can occur spontaneously in non-Hermitian systems.

arXiv commentTo appear in Physical Review A

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Cited by in corpus (19)

• Topology of anti-parity-time-symmetric non-Hermitian Su-Schrieffer-Heeger model
• Topological states in non-Hermitian two-dimensional Su-Schrieffer-Heeger model
• Non-Hermitian generalizations of extended Su-Schrieffer-Heeger models
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• Properties of the non-Hermitian SSH model: role of PT-symmetry
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• Non-Hermitian anomalous skin effect
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• Non-Hermitian tuned topological band gap
• Berry curvature inside parity-time-symmetry protected exceptional surface
• State conversions around exceptional points
• Multipartite entanglement distribution in a topological photonic network
• Quantum transport in nonlinear Rudner-Levitov models
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