Author

Yue Zhang

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Preprint Aug 2026

Probing quantumness of superpositions of Gaussian states via Tsirelson probability

Quantifying nonclassicality in continuous-variable systems remains a fundamental problem in quantum information science. The Tsirelson probability, central to the Tsirelson precession protocol, is defined as the average probability that a precessing quadrature yields a positive outcome when measured at $K$ equally spac...

Yue Zhang · 0 citations

Preprint Aug 2026

Uncovering Non-Gaussianity through Multi-Copy Symmetries

Gaussian states are fundamental in continuous-variable quantum information, yet characterizing non-Gaussianity remains challenging due to the non-convexity of the Gaussian set. Existing witnesses typically rely on Wigner negativity or other information-theoretic quantities. In this work, we develop a group-theoretic, m...

Hao Dai, Yue Zhang · 0 citations