Beyond symmetry protection: Robust feedback-enforced edge states in non-Hermitian stacked quantum spin Hall systems

arXiv:2507.17295 · cond-mat.mes-hall, cond-mat.other, math-ph, math.MP, physics.comp-ph, quant-ph · Submitted 2025-07-23 · Read on arXiv

cond-mat.mes-hall, cond-mat.other, math-ph, math.MP, physics.comp-ph, quant-ph

Submitted: 2025-07-23

Updated: 2026-09-17

Terminology

• Non-Hermitian Skin Effect — 18× in this paper · explained in 2 episodes
• Robustness — 14× in this paper · explained in 5 episodes
• Quantum Circuits — 6× in this paper · explained in 2 episodes
• Effective Hamiltonian — 5× in this paper · explained in 2 episodes
• Chern Number — 4× in this paper · explained in 4 episodes
• Nonreciprocity — 3× in this paper · explained in 2 episodes
• Phase Transitions — 3× in this paper · explained in 2 episodes
• Chiral edge states — 2× in this paper · explained in 2 episodes
• Post-Selection — 2× in this paper · explained in 2 episodes
• Symmetry Breaking — 2× in this paper · explained in 3 episodes
• Topological Order — 2× in this paper · explained in 2 episodes
• Alignment — 1× in this paper · explained in 1 episode
• Anyons — 1× in this paper · explained in 2 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Embeddings — 1× in this paper · explained in 2 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Quantization — 1× in this paper · explained in 12 episodes

Sources

• Non-Hermitian skin effect in arbitrary dimensions: non-Bloch band theory and classification
• Phase-space Generalized Brillouin Zone for spatially inhomogeneous non-Hermitian systems
• Nonlocality-induced critical-length hierarchy from non-Hermitian competition
• Observation of gauge field induced non-Hermitian helical skin effects
• Topological Edge State Nucleation in Frequency Space and its Realization with Floquet Electrical Circuits
• Realization of a non-Hermitian Haldane model in circuits
• Non-Abelian Topological Order and Anyons on a Trapped-Ion Processor
• Quantum implementation of non-unitary operations with biorthogonal representations
• Interacting non-Hermitian edge and cluster bursts on a digital quantum processor
• Observation of the non-Hermitian skin effect and Fermi skin on a digital quantum computer
• Observation of higher-order topological states on a quantum computer
• Experimental observation of exceptional bound states in a classical circuit network

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