Experimental generation of four-mode continuous-variable cluster states

Details Experimental generation of four-mode continuous-variable cluster states Experimental generation of four-mode continuous-variable cluster states

2008-04-02

arxiv.org/abs/0804.0289v2

Phys. Rev. A 78,012301 (2008)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.78.012301

Continuous-variable Gaussian cluster states are a potential resource for universal quantum computation. They can be efficiently and unconditionally built from sources of squeezed light using beam splitters. Here we report on the generation of three different kinds of continuous-variable four-mode cluster states. In our realization, the resulting cluster-type correlations are such that no corrections other than simple phase-space displacements would be needed when quantum information propagates through these states. At the same time, the inevitable imperfections from the finitely squeezed resource states and from additional thermal noise are minimized, as no antisqueezing components are left in the cluster states.

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