Dynamics of quantum information

TL;DR

This paper reviews recent progress in understanding the dynamics of quantum information and entanglement in many-body systems, highlighting theoretical insights and experimental advances relevant for quantum technology development.

Contribution

It provides a comprehensive overview of how quantum information dynamics are characterized and understood in complex quantum systems, linking theory and experiment.

Findings

Control over quantum systems reveals entanglement-thermodynamics connections

Insights into information transport bounds and computational complexity

Advances in probing quantum dynamics with neutral atoms and trapped ions

Abstract

The ability to harness the dynamics of quantum information and entanglement is necessary for the development of quantum technologies and the study of complex quantum systems. On the theoretical side the dynamics of quantum information is a topic that is helping us unify and confront common problems in otherwise disparate fields in physics, such as quantum statistical mechanics and cosmology. On the experimental side the impressive developments on the manipulation of neutral atoms and trapped ions are providing new capabilities to probe their quantum dynamics. Here, we overview and discuss progress in characterizing and understanding the dynamics of quantum entanglement and information scrambling in quantum many-body systems. The level of control attainable over both the internal and external degrees of freedom of individual particles in these systems provides great insight into the intrinsic connection between entanglement and thermodynamics, bounds on information transport and computational complexity of interacting systems. In turn this understanding should enable the realization of quantum technologies.