Single-shot comparison of random quantum channels and measurements

Author: Markiewicz M.; Pawela Ł.; Puchała Z.
Journal: Scientific Reports
Year of Publication: 2026
Status: Published
DOI: 10.1038/s41598-026-70695-z
ISSN Number: 2045-2322
URL: https://www.nature.com/articles/s41598-026-70695-z
Abstract: In this work we provide an efficiency analysis of the problem of discrimination of two randomly chosen unknown quantum operations in the single-shot regime. We provide tight bounds for the success probability of such a protocol for arbitrary quantum channels and generalized measurements.