A review on quantum information processing in cavities

TL;DR

This review discusses how coupled cavity arrays serve as a versatile platform for quantum information processing, highlighting theoretical proposals and experimental realizations that advance quantum communication and computation.

Contribution

It provides a comprehensive overview of recent theoretical and experimental developments in quantum information processing using cavity arrays.

Findings

Cavity arrays enable long-lived photon retention for coherent information transfer.

Quantum protocols have been successfully implemented in cavity arrays.

Advances suggest cavity arrays are promising for large-scale quantum networks.

Abstract

The processing of information and computation is undergoing a paradigmatic shift since the realization of the enormous potential of quantum features to perform these tasks. Coupled cavity array is one of the well-studied systems to carry out these tasks. It is a versatile platform for quantum networks for distributed information processing and communication. Cavities have the salient feature of retaining photons for longer durations, thereby enabling them to travel coherently through the array without losing them in dissipation. Many quantum information protocols have been implemented in arrays of coupled cavities. These advancements promise the suitability of cavity arrays for large-scale quantum communications and computations. This article reviews a few theoretical proposals and experimental realizations of quantum information tasks in cavities.