Dissipatively driven entanglement of two macroscopic atomic ensembles

TL;DR

This paper introduces a robust method for creating steady-state entanglement between two distant atomic ensembles by leveraging their interaction with a common electromagnetic environment, overcoming fragility issues of traditional entanglement.

Contribution

It presents a novel dissipative scheme for entangling macroscopic atomic ensembles via engineered environmental coupling, extending previous approaches to more stable, steady-state entanglement.

Findings

Theoretical framework for two-level systems with dipole interactions

Extension to multi-level ground state implementations

Proposed scheme achieves robust steady-state entanglement

Abstract

Up to date, the life time of experimentally demonstrated entangled states has been limited, due to their fragility under decoherence and dissipation. Therefore, they are created under strict isolation conditions. In contrast, new approaches harness the coupling of the system to the environment, which drives the system into the desired state. Following these ideas, we present a robust method for generating steady state entanglement between two distant atomic ensembles. The proposed scheme relies on the interaction of the two atomic systems with the common vacuum modes of the electromagnetic field which act as an engineered environment. We develop the theoretical framework for two level systems including dipole-dipole interactions and complement these results by considering the implementation in multi-level ground states.