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Protection of Two-Qubit Entanglement by the Quantum Erasing Effect

  • Department of Physics and Information Engineering, Huaihua University, Huaihua 418008

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  • Received Date: September 12, 2011
  • Revised Date: April 29, 2012
  • Published Date: April 30, 2012
    Abstract
  • We present a scheme to save the entanglement of two spatially separated atoms, each located in a leaky cavity, through the quantum erasing method. It is shown that no matter whether the two atoms are in the pure or mixed state, one can robustly save their initial entanglement even if the number of erasing events is finite. We also briefly discuss the challenging aspect of implementing such a scheme.
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    • References (23)
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