Prospects for using integrated atom-photon junctions for quantum information processing

TL;DR

This paper explores the potential of integrated atom-photon junctions for quantum computing, emphasizing their advantages in coupling, gate speed, and scalability without cavities.

Contribution

It introduces a novel approach using microfabricated photonic-atomic junctions with Rydberg blockade for scalable quantum information processing.

Findings

Enhanced atom-light coupling via microscopic optics

Potential for fast, high-fidelity quantum gates

Scalability with long coherence times

Abstract

We investigate the use of integrated, microfabricated photonic-atomic junctions for quantum information processing applications. The coupling between atoms and light is enhanced by using microscopic optics without the need for cavity enhancement. Qubits that are collectively encoded in hyperfine states of small ensembles of optically trapped atoms, coupled via the Rydberg blockade mechanism, seem a particularly promising implementation. Fast and high-fidelity gate operations, efficient readout, long coherence times and large numbers of qubits are all possible.