Entanglement of group-II-like atoms with fast measurement for quantum information processing

TL;DR

This paper proposes a scheme for entangling group-II-like neutral atoms using their long-lived optical qubits, enabling fast measurement and manipulation for quantum communication and fundamental tests of quantum mechanics.

Contribution

It introduces a novel method for entangling group-II-like atoms with fast measurement capabilities, advancing quantum information processing.

Findings

Enables pairwise entanglement of group-II-like atoms.

Supports creation of weighted graph states for quantum communication.

Facilitates tests of Bell inequalities closing detection and locality loopholes.

Abstract

We construct a scheme for the preparation, pairwise entanglement via exchange interaction, manipulation, and measurement of individual group-II-like neutral atoms (Yb, Sr, etc.). Group-II-like atoms proffer important advantages over alkali metals, including long-lived optical-transition qubits that enable fast manipulation and measurement. Our scheme provides a promising approach for producing weighted graph states, entangled resources for quantum communication, and possible application to fundamental tests of Bell inequalities that close both detection and locality loopholes.