Protocols and Techniques for a Scalable Atom--Photon Quantum Network

TL;DR

This paper reviews quantum protocols for entangling distant atomic qubits via photons, emphasizing light collection techniques like reflective optics and cavities to enable scalable atom-photon quantum networks.

Contribution

It introduces and compares methods to enhance photon collection from atomic qubits, facilitating scalable quantum networking.

Findings

Reflective optics and optical cavities improve photon collection efficiency.

Enhanced light collection is crucial for scalable atom-photon quantum networks.

The paper surveys applications of scalable quantum networks.

Abstract

Quantum networks based on atomic qubits and scattered photons provide a promising way to build a large-scale quantum information processor. We review quantum protocols for generating entanglement and operating gates between two distant atomic qubits, which can be used for constructing scalable atom--photon quantum networks. We emphasize the crucial role of collecting light from atomic qubits for large-scale networking and describe two techniques to enhance light collection using reflective optics or optical cavities. A brief survey of some applications for scalable and efficient atom--photon networks is also provided.