ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Topologically Protected Negative Entanglement.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Beyond the Non-Hermitian Skin Effect: Scaling-Controlled Topology from Exceptional-Bound Bands.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Topologically Protected Negative Entanglement.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Observation of the non-Hermitian skin effect and Fermi skin on a digital quantum computer.Nature communications · 2025Article
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2 authors.
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Abstract
The entanglement entropy encodes fundamental characteristics of quantum many-body systems, and is particularly subtle in non-Hermitian settings where eigenstates generically become non-orthogonal. In this work, it is found that negative biorthogonal entanglement generically arises from topologically protected non-orthogonal edge states in free fermion systems, especially for flat-band edge states. Departing from previous literature which associated negative entanglement with exceptional gapless points, it is showed that robustly negative entanglement can still occur in gapped systems. Gapless 2D flat-band edge states, however, exhibit novel
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