Chin. Phys. Lett.  2012, Vol. 29 Issue (5): 050304    DOI: 10.1088/0256-307X/29/5/050304
GENERAL |
Protection of Two-Qubit Entanglement by the Quantum Erasing Effect
XIANG Shao-Hua**,DENG Xiao-Peng,SONG Ke-Hui
Department of Physics and Information Engineering, Huaihua University, Huaihua 418008
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XIANG Shao-Hua, DENG Xiao-Peng, SONG Ke-Hui 2012 Chin. Phys. Lett. 29 050304
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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.
Received: 13 September 2011      Published: 30 April 2012
PACS:  03.67.Pp (Quantum error correction and other methods for protection against decoherence)  
  03.65.Yz (Decoherence; open systems; quantum statistical methods)  
  03.67.-a (Quantum information)  
  42.50.Pq (Cavity quantum electrodynamics; micromasers)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/29/5/050304       OR      https://cpl.iphy.ac.cn/Y2012/V29/I5/050304
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XIANG Shao-Hua
DENG Xiao-Peng
SONG Ke-Hui
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