The Optical Frequency Comb as a One-Way Quantum Computer

TL;DR

This paper proposes a scalable method to generate universal continuous-variable cluster states for one-way quantum computing using a single multimode optical parametric oscillator, advancing optical quantum computing technology.

Contribution

It introduces a novel approach to create large-scale, universal cluster states using only a single OPO, simplifying the resource requirements for optical quantum computing.

Findings

Method successfully generates continuous-variable cluster states

The approach is scalable for large quantum systems

It encodes quantum information in optical frequency comb quadratures

Abstract

In the one-way model of quantum computing, quantum algorithms are implemented using only measurements on an entangled initial state. Much of the hard work is done up-front when creating this universal resource, known as a cluster state, on which the measurements are made. Here we detail a new proposal for a scalable method of creating cluster states using only a single multimode optical parametric oscillator (OPO). The method generates a continuous-variable cluster state that is universal for quantum computation and encoded in the quadratures of the optical frequency comb of the OPO. This work expands on the presentation in Phys. Rev. Lett. 101, 130501 (2008).