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arXiv · 2507.12513

Quantum Tomography in Neutral Meson and Antimeson Systems

Kun Cheng·Tao Han·Matthew Low·Tong Arthur Wu
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Abstract

The flavor space of particles produced in collider environments contains informative quantum correlations. We present a systematic approach for constructing the complete flavor density matrix for a meson and antimeson system ($M \bar M$) in the Bloch vector space at a given time $t$, which can be at or after production. We point out that the $B_s^0$ and $K^0$ systems are superior to the $B^0_d$ and $D^0$ systems for quantum tomography because of their flavor oscillation and decay properties. Performing quantum tomography for the $M \bar M$ system can facilitate the study of production mechanisms, decoherence phenomena, quantum information variables, and potential new sources of CP violation.

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Kun Cheng, Tao Han, Matthew Low, Tong Arthur Wu. 2025-07-16. Quantum Tomography in Neutral Meson and Antimeson Systems. https://arxiv.org/abs/2507.12513

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