1210.5188 (I. Rigas et al.)

Compact generation of easy-to-access continuous-variable cluster states    [PDF]

I. Rigas, Ch. Gabriel, S. Berg-Johansen, A. Aiello, P. van Loock, U. L. Andersen, Ch. Marquardt, G. Leuchs

Cluster states are an essential component in one-way quantum computation protocols. We present novel schemes to generate addressable and scalable cluster states. Specifically, we exploit the entanglement contained in quadrature squeezed cylindrically polarized modes as the resource for our cluster state production. We carefully examine the properties of the obtained cluster states and quantify these. It is shown that these cluster states can be built through very compact designs. All modes are directly addressable, as needed for one-way quantum computation. Furthermore, we experimentally implement one of the proposed schemes and verify its feasibility by measuring the quantum correlations between the different nodes of the cluster state.

View original: http://arxiv.org/abs/1210.5188