Demonstration of a fully tuneable entangling gate for continuous-variable one-way quantum computation

TL;DR

This paper demonstrates a fully tuneable entangling gate for continuous-variable one-way quantum computation, verified through entanglement measurements, and highlights its potential for scalable quantum processing.

Contribution

It introduces a new, fully tuneable entangling gate for continuous-variable quantum computing and demonstrates its operation with a proof-of-principle experiment.

Findings

Successfully verified entanglement in the output state

Demonstrated gate operation in various regimes

Showed potential for scalable quantum computation

Abstract

We introduce a fully tuneable entangling gate for continuous-variable one-way quantum computation. We present a proof-of-principle demonstration by propagating two independent optical inputs through a three-mode linear cluster state and applying the gate in various regimes. The genuine quantum nature of the gate is confirmed by verifying the entanglement strength in the output state. Our protocol can be readily incorporated into efficient multi-mode interaction operations in the context of large-scale one-way quantum computation, as our tuning process is the generalisation of cluster state shaping.