Robustness of Measurement
September 21st, 2018 PAUL SKRZYPCZYK University of Bristol

In this talk I will introduce a way of quantifying how informative a quantum measurement is, starting from a resource-theoretic perspective. This quantifier I will introduce, called the robustness of measurement, describes how much `noise’ must be added to a measurement before it becomes completely uninformative. This geometric quantifier will be shown to have operational significance in terms of the advantage the measurement provides over guessing at random in a suitably chosen state discrimination game. Furthermore, it will be seen to be the single-shot generalisation of the accessible information of a certain quantum-to-classical channel.

Seminar, September 21, 2018, 15:00. ICFO’s Blue Lecture Room

Hosted by Prof. Antonio Acín