Large dynamic light-matter entanglement from driving neither too fast nor too slow

TL;DR

This paper introduces a novel regime of dynamical light-matter interaction where intermediate-speed coupling variations generate large, system-wide entanglement, surpassing traditional adiabatic approaches and enabling tailored entanglement distribution.

Contribution

It demonstrates a new dynamical regime for generating macroscopic entanglement in light-matter systems through intermediate velocity coupling variations.

Findings

Giant, system-wide entanglement is achieved at intermediate velocities.

Enhanced entanglement exceeds that near quantum phase transitions under adiabatic conditions.

Entanglement can be localized or spread system-wide depending on coupling choices.

Abstract

A significant problem facing next-generation quantum technologies is how to generate and manipulate macroscopic entanglement in light and matter systems. Here we report a new regime of dynamical light-matter behavior in which a giant, system-wide entanglement is generated by varying the light-matter coupling at \emph{intermediate} velocities. This enhancement is far larger and broader-ranged than that occurring near the quantum phase transition of the same model under adiabatic conditions. By appropriate choices of the coupling within this intermediate regime, the enhanced entanglement can be made to spread system-wide or to reside in each subsystem separately.