Arrays of open, independently tunable microcavities

TL;DR

This paper introduces a scalable array of microcavities fabricated via silicon micro-fabrication, allowing for large, uniform, and tunable light-matter interfaces suitable for quantum computing and simulation.

Contribution

It presents the first scalable microcavity system with independent tuning, enabling large networks of optical microcavities for quantum applications.

Findings

Microcavities are created using silicon micro-fabrication.

Microcavities are coupled directly to optical fibres.

Each microcavity can be independently tuned.

Abstract

Optical cavities are of central importance in numerous areas of physics, including precision measurement, cavity optomechanics and cavity quantum electrodynamics. The miniaturisation and scaling to large numbers of sites is of interest for many of these applications, in particular for quantum computation and simulation. Here we present the first scaled microcavity system which enables the creation of large numbers of highly uniform, tunable light-matter interfaces using ions, neutral atoms or solid-state qubits. The microcavities are created by means of silicon micro-fabrication, are coupled directly to optical fibres and can be independently tuned to the chosen frequency, paving the way for arbitrarily large networks of optical microcavities.