Universal recoverability of quantum states in tracial von-Neumann algebras

Saptak Bhattacharya

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arXiv · 2512.08418

Universal recoverability of quantum states in tracial von-Neumann algebras

Saptak Bhattacharya

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Abstract

In this paper, we discuss a refinement of quantum data processing inequality for the sandwiched quasi-relative entropy $\mathcal{S}_2$ on a tracial von-Neumann algebra. The main result is a universal recoverability bound with the Petz recovery map, which was previously obtained in the finite dimensional setup.

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Saptak Bhattacharya. 2025-12-09. Universal recoverability of quantum states in tracial von-Neumann algebras. https://arxiv.org/abs/2512.08418

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