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Generating a Four-qubit Photon-Number Cluster State via Cross-Kerr Medium

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Abstract

A scheme is proposed for generating a photon-number entangled cluster state among four modes. The scheme only uses Kerr medium and homodyne measurement on probe coherent light fields, which can be efficiently made in quantum optical laboratories. The photon in the signal mode is prepared in a superposition state of the vacuum state and one-photon state while the probe beam is initially set in a intense coherent state superposition. It is shown that under certain conditions, the four-photon cluster state can be generated effectively with high success probability and homodyne detection required only once, and the scheme is feasible by current experimental technology.

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Authors and Affiliations

  1. School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000, P.R. China

    Mengzheng Zhu & Guangyu Yuan

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  1. Mengzheng Zhu
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  2. Guangyu Yuan
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Correspondence to Guangyu Yuan.

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Zhu, M., Yuan, G. Generating a Four-qubit Photon-Number Cluster State via Cross-Kerr Medium. Int J Theor Phys 50, 934–938 (2011). https://doi.org/10.1007/s10773-010-0637-2

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  • DOI: https://doi.org/10.1007/s10773-010-0637-2

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