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Scheme for the generation of entangled atomic state in cavity QED

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Abstract.

We propose a scheme to generate the entangled state of two \(\Lambda \)-type three-level atoms trapped in a cavity. The atoms are initially prepared in their excited state and the cavity in vacuum state. Each atom has two possibilities to deexcite to one of the ground states. If two different polarized photons are detected subsequently, it is sure that both atoms are in different ground states. But which atom is in which ground state cannot be determined, the atoms are thus prepared in a superposition of two ground states, i.e., an entangled state. In comparison with the proposal of Hong and Lee [Phys. Rev. Lett. 89, 237901 (2002)], the requirement of a single polarized photon source can be avoided in our scheme.

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Authors and Affiliations

  1. Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800, Shanghai, P.R. China

    Z.-L. Duan, J.-T. Zhang, X.-L. Feng & Z.-Z. Xu

  2. Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk-Antwerp, Belgium

    Z.-Y. Chen

  3. Department of Physics, Blk S12, National University of Singapore 2, Science Drive 3, 117542, Singapore

    X.-L. Feng

Authors
  1. Z.-L. Duan
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  2. Z.-Y. Chen
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  3. J.-T. Zhang
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  4. X.-L. Feng
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  5. Z.-Z. Xu
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Corresponding author

Correspondence to X.-L. Feng.

Additional information

Received: 20 February 2004, Published online: 6 July 2004

PACS:

03.67.Mn Entanglement production, characterization and manipulation - 42.50.Ct Quantum description of interaction of light and matter; related experiments

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Duan, ZL., Chen, ZY., Zhang, JT. et al. Scheme for the generation of entangled atomic state in cavity QED. Eur. Phys. J. D 30, 275–278 (2004). https://doi.org/10.1140/epjd/e2004-00086-2

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  • DOI: https://doi.org/10.1140/epjd/e2004-00086-2

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