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Optics Communications

Scheme for generation of four-atom Greenberger–Horne–Zeilinger states in an optical cavity

Wei Xiong, Liu Ye

Published Apr 19, 2011• 3 citations
Publisher
DOI
10.1016/j.optcom.2011.03.076

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Effective scheme for generation of NNN N -dimension atomic Greenberger–Horne–Zeilinger states
We propose a scheme to generate a four-particle Greenberger-Horne-Zeilinger (GHZ) state of distant atoms that are trapped separately in leaky cavities. This scheme uses cavity decay to inject photons into a setup of optical devices that consist of a symmetric series of beam splitters and photon detectors. Photon detection on the output modes of the beam splitters projects the atom-cavity-system state onto the GHZ state. It is briefly pointed out that this scheme can be extended to generate GHZ states of 4m4m4m atoms.