From the 1 of 14 linked papers with an AI index.
14 papers
Graph Theoretic Approach to Quantum Nonstabilizerness
Yingjian Liu, Albert Gasull, Mengyao Hu +3
The paper studies how graph structures of Pauli measurements can be used to efficiently certify quantum magic (nonstabilizerness) without full state tomography.
Optimizing and Certifying Multipartite Permutationally Invariant Bell Inequalities
Jin-Fu Chen, Mengyao Hu, Jordi Tura
Multipartite Bell nonlocality provides a device-independent probe of many-body quantum correlations, but its characterization is limited by the rapid growth of the underlying class…
Random Projections for Multi-Copy Quantum Algorithms
Xiaoyu Liu, Jordi Tura, Johannes Knörzer
Estimating nonlinear properties of quantum states is a central task in quantum information science. Multivariate traces, , and nonlinear observables…
Nonlocality, Integrability and Quantum Chaos in the Spectrum of Bell Operators
Albert Aloy, Guillem Müller-Rigat, Maciej Lewenstein +2
We introduce a permutationally invariant multipartite Bell inequality for many-body three-level systems and use it to investigate a connection between Bell nonlocality and (lack of…
A Hierarchy of Spectral Gap Certificates for Frustration-Free Spin Systems
Kshiti Sneh Rai, Ilya Kull, Patrick Emonts +3
Estimating spectral gaps of quantum many-body Hamiltonians is a highly challenging computational task, even under assumptions of locality and translation-invariance. Yet, the quest…
Nonparametric Learning Non-Gaussian Quantum States of Continuous Variable Systems
Liubov A. Markovich, Xiaoyu Liu, Jordi Tura
Continuous-variable quantum systems are foundational to quantum computation, communication, and sensing. While traditional representations using wave functions or density matrices…