Quantum Foundations | Xiangling Xu 许湘灵

Fermions are fundamentally more nonlocal than Bosons

Thu, 11 Jun 2026 00:00:00 +0000

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

Mon, 13 Apr 2026 00:00:00 +0000

Two convergent NPA-like hierarchies for the quantum bilocal scenario

Fri, 09 Jan 2026 00:00:00 +0000

Quantitative quantum soundness for all multipartite compiled nonlocal games

Tue, 30 Sep 2025 00:00:00 +0000

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

Mon, 15 Sep 2025 00:00:00 +0000

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

Tue, 22 Jul 2025 00:00:00 +0000

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

Thu, 17 Jul 2025 00:00:00 +0000

The multipartite result (arXiv:2509.25145) generalizes and subsumes the earlier bipartite analysis. Talks given before 2025 correspond to the bipartite case, while later talks include the full multipartite framework. This talk has been presented at multiple venues. The date above is set to the most recent instance for correct ordering in the Talks list. Materials (slides/poster) are partially shared with twists

Talks

Date	Event	Host / Location	Type
2026-08	QCrypt¹	Ottawa, Canada	Contributed
2026-06	SIAM Conference on Optimization (OP26)²	Edinbrugh, United Kingdom	Invited
2026-01	QIP 2026³ - 2 talks	Riga, Lativia	Contributed
2025-12	Quantum Meets⁴	Online	Invited
2025-11	3rd Colloquium GDR TeQ⁵	Grenoble, France	Contributed
2025-09	YQIS25⁶	Barcelona, Spain	Contributed
2025-07	IWOTA 2025⁷	Twente, Netherland	Invited
2025-06	IQC-PCQT-Quantum Saclay Workshop⁸	Paris, France	Invited

Also presented at various internal group meetings during research visits.

Image credit: My wonderful colleagues

Image credit: IWOTA 2025 at Twente, Netherland

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Characterizing quantum bilocal networks with generalized NPA hierarchies

Wed, 18 Sep 2024 00:00:00 +0000

This talk has been presented at multiple venues. The date above is set to the most recent instance for correct ordering in the Talks list. Materials (slides/poster) are shared with minor venue-specific tweaks.

Talks

Date	Event	Host / Location	Type
2024-09	CausalWorlds¹	Perimeter Institute, Waterloo (CA)	Contributed
2023-11	Defi EQIP²	Inria Lyon, Lyon (FR)	Contributed
2023-10	Saclay Quantum Seminar	Inria Saclay, Palaiseau (FR)	Invited

Poster sessions

Date	Event	Host / Location
2024-11	YQIS24³	Inria Paris, Paris (FR)
2024-11	GDR TeQ 2024⁴	Sorbonne University, Paris (FR)

Also presented at various internal group meetings during research visits.

Image credit: WAQ (We are quantum) at Paris, France

Image credit: YQIS24 at Paris, France

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Quantum Nonlocality in Bilocal Networks: An Operator Algebraic Perspective

Fri, 15 Sep 2023 00:00:00 +0000