Entanglement in the adiabatic limit of a two-atom Tavis-Cummings model

TL;DR

This paper demonstrates that with proper Stark-pulse control, the adiabatic passage of atoms through a high-Q cavity can reliably produce high-fidelity entanglement, connecting adiabatic and resonant regimes.

Contribution

It shows that the adiabatic approximation remains valid with appropriate Stark-pulses, enabling robust entanglement creation in a two-atom Tavis-Cummings model.

Findings

High-fidelity entanglement up to 97% achieved in high-Q cavities

Adiabatic passage can be reliably used with proper Stark-pulse control

Connection established between adiabatic and resonant limits

Abstract

We study the adiabatic limit for the sequential passage of atoms through a high-Q cavity, in the presence of frequency chirps. Despite the fact that the adiabatic approximation might be expected to fail, we were able to show that for proper choice of Stark-pulses this is not the case. Instead, a connection to the resonant limit is established, where the robust creation of entanglement is demonstrated. Recent developments in the fabrication of high-Q cavities allow fidelities for a maximally entangled state up to 97%.