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

Shota Yokoyama, Ryuji Ukai, Seiji C. Armstrong, Jun-ichi Yoshikawa, Peter van Loock, Akira Furusawa

Published 2014-10-02Version 1

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.