Enhancing Quantum Entanglement Through Parametric Control of Atom-Cavity States

TL;DR

This paper demonstrates how to precisely control and produce Dicke states in atom-cavity systems by tuning parameters, which could advance quantum engineering and information processing.

Contribution

It introduces a method for selecting and generating pure Dicke states through parametric control in the large field energy regime.

Findings

Pure Dicke states can be selectively produced.

Parameter tuning enables ground state control.

Potential applications in quantum information processing.

Abstract

Dicke states form a class of entangled states that has attracted much attention for their applications in various quantum algorithms. They emerge as eigenstates of the Tavis-Cummings Hamiltonian, a simplification of the Dicke model, which describes an assembly of two-level atoms trapped in an electromagnetic cavity. In this letter, we show that in the regime where the field energy is large with respect to the atomic energy splitting, precise control of the ground state can be implemented. Specifically, pure Dicke states can be selected and produced by appropriate tuning of the parameters. This result may have important applications in quantum engineering and quantum information theory.