Strong coherent ion-electron coupling using a wire data bus

TL;DR

This paper proposes a wire-mediated scheme for strong coherent ion-electron coupling, significantly enhancing ion-ion interactions and enabling advanced quantum information processing in hybrid systems.

Contribution

It introduces a novel wire-mediated ion-electron coupling scheme that boosts ion-ion coupling strength and facilitates sympathetic cooling, advancing hybrid quantum system capabilities.

Findings

Enhanced ion-electron coupling strength by orders of magnitude.

Enables sympathetic cooling of electrons using ion-cooling techniques.

Paves the way for quantum information processing in hybrid systems.

Abstract

Ion-ion coupling over long distances represents a highly useful resource for quantum technologies, for example, to sympathetically cool or interconnect qubits in ion-based quantum-computing architectures. In this respect, the recently demonstrated wire-mediated ion-ion coupling stands due to the simplification of its trap layout and its prospects for deterministic entanglement. However, the strength of such coherent ion-wire-ion coupling is typically weak, hindering its practical utilization. Here, we propose a wire-mediated scheme for coherent ion-electron coupling. The scheme not only enables the sympathetic cooling of electrons via advanced ion-cooling techniques, but also allows to promote the effective ion-ion coupling strength by orders of magnitudes via electron mediation. Our work thus paves a way toward quantum information processing in ion-electron hybrid quantum systems.