Investigating the Global Properties of a Resource Theory of Contextuality

TL;DR

This paper explores the global properties of a resource theory for quantum contextuality, using established tools like cost and yield monotones to deepen understanding of contextuality as a quantum resource.

Contribution

It introduces a resource theory framework for quantum contextuality and applies existing analytical tools to characterize its global properties.

Findings

Extended cost and yield monotones to general contextuality scenarios.

Provided new insights into the structure of contextuality as a quantum resource.

Connected resource theory properties with foundational aspects of quantum mechanics.

Abstract

Resource theories constitute a powerful theoretical framework and a tool that captures, in an abstract structure, pragmatic aspects of the most varied theories and processes. For physical theories, while this framework deals directly with questions about the concrete possibilities of carrying out tasks and processes, resource theories also make it possible to recast these already established theories on a new language, providing not only new perspectives on the potential of physical phenomena as valuable resources for technological development, for example, but they also provide insights into the very foundations of these theories. In this work, we will investigate some properties of a resource theory for quantum contextuality, an essential characteristic of quantum phenomena that ensures the impossibility of interpreting the results of quantum measurements as revealing properties that are independent of the set of measurements being made. We will present the resource theory to be studied and investigate certain global properties of this theory using tools and methods that, although already developed and studied by the community in other resource theories, had not yet been used to characterize resource theories of contextuality. In particular, we will use the so called cost and yield monotones, extending the results of reference Quantum 4, 280 (2020) to general contextuality scenarios.