Toward a fully relativistic theory of quantum information

TL;DR

This paper reviews progress and challenges in developing a relativistic quantum information theory that extends classical Shannon information to account for quantum detectors in relativistic and curved space-time contexts.

Contribution

It summarizes key milestones and discusses future directions in the emerging field of relativistic quantum information theory.

Findings

Progress made in extending classical information theory to relativistic quantum settings

Identification of unresolved issues in relativistic quantum information

Speculation on future research directions

Abstract

Information theory is a statistical theory dealing with the relative state of detectors and physical systems. Because of this physicality of information, the classical framework of Shannon needs to be extended to deal with quantum detectors, perhaps moving at relativistic speeds, or even within curved space-time. Considerable progress toward such a theory has been achieved in the last fifteen years, while much is still not understood. This review recapitulates some milestones along this road, and speculates about future ones.