The variance of relative surprisal as single-shot quantifier

• Main Authors: Boes, Paul, Ng, Nelly Huei Ying, Wilming, Henrik
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2022
• Subjects: Science::Physics; Leading Orders; Quantum Information Theory
• Online Access: https://hdl.handle.net/10356/163972
• Institution: Nanyang Technological University

The variance of (relative) surprisal, also known as varentropy, so far mostly plays a role in information theory as quantifying the leading order corrections to asymptotic i.i.d.~limits. Here, we comprehensively study the use of it to derive single-shot results in (quantum) information theory. We sh...