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Abstract: We describe a measurement-based state preparation scheme for the efficientbuild up of cluster states in atom-cavity systems. As in a recent proposal forthe generation of maximally entangled atom pairs Metz et al., Phys. Rev. Lett.97, 040503 2006, we use an electron shelving technique to avoid thenecessity for the detection of single photons. Instead, the successful fusionof smaller into larger clusters is heralded by an easy-to-detect macroscopicfluorescence signal. High fidelities are achieved even in the vicinity of thebad cavity limit and are essentially independent of the concrete size of thesystem parameters.



Autor: Jeremy Metz, Christian Schoen, Almut Beige

Fuente: https://arxiv.org/







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