Zuse Institute Berlin

Unified toolbox for multipartite entanglement certification

We present a unified framework for multipartite entanglement characterization based on the conditional gradient (CG) method, incorporating both fast heuristic detection and rigorous witness construction with numerical error control. Our method enables entanglement certification i...

Methods for inferring interaction potentials from cross-linking mass spectrometry data

Cross-linking mass spectrometry (XL-MS) has emerged as a powerful quantitative technique for probing intra-protein structural information as well as protein-protein interactions at an unprecedented scale. XL-MS data yield information on the pairwise spatial proximity of proteins...

A Complex‐Frequency Framework for Kerker Unidirectionality in Photonic Resonators

ABSTRACT Electromagnetic scattering exhibits various anomalous behaviors, such as forward or backward scattering effects known as the Kerker conditions. These anomalies appear in non‐Hermitian photonic resonators and are mathematically described by operators with complex eigenfre...

A reproducible benchmark for ECG-to-text report generation: Leakage-safe evaluation, performance floors, and stress testing

Free-text report generation directly from ECG signals is an emerging task, but the field currently lacks a reproducible, leakage-safe evaluation protocol that makes results comparable across studies. To address this, we introduce both a benchmark and a reference implementation: t...

A cross-species atlas platform for comparative neuroscience in teleost fish

Abstract Uncovering general principles connecting neural circuits to behaviour requires comparative brain analyses across species. To advance these efforts, we developed a standardised workflow and a unified brain atlas platform for the quantitative comparison of neural structure...

A Frank-Wolfe-based primal heuristic for quadratic mixed-integer optimization

Abstract We propose a primal heuristic for quadratic mixed-integer problems. Our method extends the Boscia framework – originally a mixed-integer convex solver leveraging a Frank-Wolfe-based branch-and-bound approach – to address nonconvex quadratic objective functions and constr...

Pole-Expansion of the T-Matrix Based on a Matrix-Valued AAA-Algorithm

Abstract The transition matrix (T-matrix) is a complete description of an object’s linear scattering response. As such, it has found wide adoption for the theoretical and computational description of multiple-scattering phenomena. In its original form, the T-matrix describes the...

Graph-based complexity and computational capabilities of proteinoid spike systems

Abstract Proteinoid microspheres exhibit oscillatory electrical dynamics that encode rich temporal structure. We analyse five proteinoid spike-train datasets using a two-step nonlinear transformation based on spiral sampling and significant-digit extraction, producing a multi-nod...