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Distributed phase-covariant cloning with atomic ensembles via quantum Zeno dynamics

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Abstract

We propose an interesting scheme for distributed orbital state quantum cloning with atomic ensembles based on the quantum Zeno dynamics. These atomic ensembles which consist of identical three-level atoms are trapped in distant cavities connected by a single-mode integrated optical star coupler. These qubits can be manipulated through appropriate modulation of the coupling constants between atomic ensemble and classical field, and the cavity decay can be largely suppressed as the number of atoms in the ensemble qubits increases. The fidelity of each cloned qubit can be obtained with analytic result. The present scheme provides a new way to construct the quantum communication network.

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Authors and Affiliations

  1. Department of Physics, Fuzhou University, 350002, Fuzhou, P.R. China

    L. T. Shen & H. Z. Wu

  2. Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, 230026, Hefei, P.R. China

    Z. B. Yang

Authors
  1. L. T. Shen
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  2. H. Z. Wu
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  3. Z. B. Yang
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Correspondence to L. T. Shen.

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Shen, L.T., Wu, H.Z. & Yang, Z.B. Distributed phase-covariant cloning with atomic ensembles via quantum Zeno dynamics. Eur. Phys. J. D 66, 123 (2012). https://doi.org/10.1140/epjd/e2012-20765-5

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