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Quantum entanglement of four distant atoms trapped in different optical cavities
We propose a unified scheme to generate W states, Greenberger-Horne-Zeilinger (GHZ) states, and cluster states of four distant atoms, which are trapped separately in leaky cavities. The proposed schemes require linear optical elements and photon detectors with single-photon sensitivity. The quantum...
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Published in: | Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-05, Vol.69 (5), Article 052314 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We propose a unified scheme to generate W states, Greenberger-Horne-Zeilinger (GHZ) states, and cluster states of four distant atoms, which are trapped separately in leaky cavities. The proposed schemes require linear optical elements and photon detectors with single-photon sensitivity. The quantum noise influences the fidelity of the generated states. Further, based on the four-photon coincidence detection, we propose another scheme to generate the W states and GHZ states of four distant atoms. The scheme is insensitive to the quantum noise, but cannot be used to generate the cluster states. |
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ISSN: | 1050-2947 1094-1622 |
DOI: | 10.1103/PhysRevA.69.052314 |