Dissipation induced $W$ state in a Rydberg-atom-cavity system

TL;DR

This paper proposes a dissipative method to generate a robust tripartite W state in a Rydberg-atom-cavity system, achieving high fidelity using current experimental parameters.

Contribution

It introduces a novel combination of quantum Zeno dynamics, Rydberg antiblockade, and spontaneous emission to reliably produce the W state as a steady state.

Findings

Achieves over 98% fidelity in W state preparation.

Demonstrates robustness against cavity loss.

Feasible with current experimental setups.

Abstract

A dissipative scheme is proposed to prepare tripartite $W$ state in a Rydberg-atom-cavity system. It is an organic combination of quantum Zeno dynamics, Rydberg antiblockade and atomic spontaneous emission to turn the tripartite $W$ state into the unique steady state of the whole system. The robustness against the loss of cavity and the feasibility of the scheme are demonstrated thoroughly by the current experimental parameters, which leads to a high fidelity above $98\%$.