Tight Universal Bounds on Quantum Data Hiding with Multipartite Werner States

Name: Tight Universal Bounds on Quantum Data Hiding with Multipartite Werner States
Uploaded: 2026-10-04T15:19:32.061508+00:00
Duration: 793 s
Description: The study established tight universal bounds for distinguishing pairs of multipartite Werner states using PPT-BOTH measurements. It found that the bias is at most $3/2 n(n-1)/d$, which is asymptotically optimal. This result resolves an open problem regarding the uniform security guarantee in data hiding and provides a lower bound of $\Omega(\sqrt{d})$ for testing unitarily invariant properties.

The study established tight universal bounds for distinguishing pairs of multipartite Werner states using PPT-BOTH measurements. It found that the bias is at most $3/2 n(n-1)/d$, which is asymptotically optimal. This result resolves an open problem regarding the uniform security guarantee in data hiding and provides a lower bound of $\Omega(\sqrt{d})$ for testing unitarily invariant properties.

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