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- W4367000231 abstract "Convex splitting is a powerful technique in quantum information theory used in proving the achievability of numerous information-processing protocols such as quantum state redistribution and quantum network channel coding. In this work, we establish a one-shot error exponent and a one-shot strong converse for convex splitting with trace distance as an error criterion. Our results show that the derived error exponent (strong converse exponent) is positive if and only if the rate is in (outside) the achievable region. This leads to new one-shot exponent results in various tasks such as communication over quantum wiretap channels, secret key distillation, one-way quantum message compression, quantum measurement simulation, and quantum channel coding with side information at the transmitter. We also establish a near-optimal one-shot characterization of the sample complexity for convex splitting, which yields matched second-order asymptotics. This then leads to stronger one-shot analysis in many quantum information-theoretic tasks." @default.
- W4367000231 created "2023-04-27" @default.
- W4367000231 creator A5039441880 @default.
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- W4367000231 date "2023-04-24" @default.
- W4367000231 modified "2023-09-30" @default.
- W4367000231 title "Tight One-Shot Analysis for Convex Splitting with Applications in Quantum Information Theory" @default.
- W4367000231 doi "https://doi.org/10.48550/arxiv.2304.12055" @default.
- W4367000231 hasPublicationYear "2023" @default.
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