Error of an arbitrary single-mode Gaussian transformation on a weighted cluster state using a cubic phase gate

TL;DR

This paper introduces optimization strategies for reducing errors in single-mode Gaussian transformations in one-way quantum computing on cluster states, notably using a cubic phase gate to significantly lower error probabilities.

Contribution

It presents novel methods for minimizing transformation errors by adjusting cluster state weights and incorporating a cubic phase gate, enhancing quantum computation accuracy.

Findings

Error probability can be reduced by up to 900 times.

Optimizations improve error correction success rates.

Proper weight selection and non-Gaussian states decrease transformation errors.

Abstract

In this paper, we propose two strategies for decreasing the error of arbitrary single-mode Gaussian transformations implemented using one-way quantum computation on a four-node linear cluster state. We show that it is possible to minimize the error of the arbitrary single-mode Gaussian transformation by a proper choice of the weight coefficients of the cluster state. We modify the computation scheme by adding a non-Gaussian state obtained using a cubic phase gate as one of the nodes of the cluster. This further decreases the computation error. We evaluate the efficiencies of the proposed optimization schemes comparing the probabilities of the error correction of the quantum computations with and without optimizations. We have shown that for some transformations, the error probability can be reduced by up to 900 times.