Quantum Foundations

An operational characterization of finite-dimensional quantum theory

Two-body correlations, together with stability under iterated teleportation, characterize finite-dimensional quantum theory and certify Bell violations beyond those directly …

Quantum inflation and source-transfer hierarchies are complete for tree networks

Beyond qubits: fermionic nonlocality in distributed quantum computing

Can fermions do more than qubits in distributed computation? Yes—we show that their correlations cannot be reproduced by any qubit- or boson-based protocol without additional …

Xiangling Xu 许湘灵

• 2026-07-02

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Fermions are fundamentally more nonlocal than Bosons

Talks and posters 2026-08 International Symposium on Mathematical Theory of Networks and Systems (MTNS 2026) (by Fatemeh Moradi Kalarde) 2026-08 CQCC & GQSF 2026 (poster)

Comment on "Quantum theory based on real numbers cannot be experimentally falsified": On the compatibility of physical principles with information theory for fermions

Two convergent NPA-like hierarchies for the quantum bilocal scenario

Talks and posters 2024-11 YQIS24 (poster) 2024-11 2nd Colloquium GdR TeQ (poster) 2024-09 CausalWorlds 2024 2023-11 Defi EQIP Workshop

Quantitative quantum soundness for all multipartite compiled nonlocal games

Talks and posters 2026-08 QCrypt 2026 2026-08 CQCC & GQSF 2026 (poster) 2026-06 SIAM Conference on Optimization (OP26) 2026-01 QIP 2026 2025-11 3rd Colloquium GdR TeQ 2025-10 …

Quantitative Tsirelson's Theorems via Approximate Schur's Lemma and Probabilistic Stampfli's Theorems

Quantitative Quantum Soundness for Bipartite Compiled Bell Games via the Sequential NPA Hierarchy

Talks and posters 2026-06 SIAM Conference on Optimization (OP26) 2026-01 QIP 2026 2025-11 3rd Colloquium GdR TeQ 2025-07 IWOTA 2025 2025-06 IQC–PCQT–Quantum Saclay Workshop

Quantitative quantum soundness for compiled nonlocal games and the sequential NPA hierarchy for completely positive maps

Can cryptography replace spatial separation in tests of quantum correlations? We use a hierarchy for sequential quantum strategies to obtain quantitative bounds for multipartite …

Xiangling Xu 许湘灵

• 2025-07-17

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