Atomic cluster state build up with macroscopic heralding

Details Atomic cluster state build up with macroscopic heralding Atomic cluster state build up with macroscopic heralding

2007-07-27

arxiv.org/abs/0707.4069v2

Phys. Rev. A 76, 052307 (2007).

Physics

Quantum Physics

14 pages, 12 figures; minor changes, mainly clarifications

Scientific paper

10.1103/PhysRevA.76.052307

We describe a measurement-based state preparation scheme for the efficient build up of cluster states in atom-cavity systems. As in a recent proposal for the generation of maximally entangled atom pairs [Metz et al., Phys. Rev. Lett. 97, 040503 (2006)], we use an electron shelving technique to avoid the necessity for the detection of single photons. Instead, the successful fusion of smaller into larger clusters is heralded by an easy-to-detect macroscopic fluorescence signal. High fidelities are achieved even in the vicinity of the bad cavity limit and are essentially independent of the concrete size of the system parameters.

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