A large-scale one-way quantum computer in an array of coupled cavities

TL;DR

This paper presents a method to efficiently create large-scale 2D cluster states in coupled cavity arrays for one-way quantum computing, leveraging geometric phase shifts for rapid entanglement.

Contribution

It introduces a novel approach to generate 2D cluster states using coherent displacements and geometric phases in coupled cavity systems, enabling scalable solid-state quantum computation.

Findings

Large-scale 2D cluster states can be generated quickly.

The method is feasible for solid-state quantum computing.

Geometric phase shifts enable efficient entanglement creation.

Abstract

We propose an efficient method to realize a large-scale one-way quantum computer in a two-dimensional (2D) array of coupled cavities, based on coherent displacements of an arbitrary state of cavity fields in a closed phase space. Due to the nontrivial geometric phase shifts accumulating only between the qubits in nearest-neighbor cavities, a large-scale 2D cluster state can be created within a short time. We discuss the feasibility of our method for scale solid-state quantum computation