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Entanglement Purification with Higher Error Threshold for Imperfection of Local Operations and Bell State Measurements |
SONG Xin-Guo;FENG Xun-Li |
Key Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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Cite this article: |
SONG Xin-Guo, FENG Xun-Li 2005 Chin. Phys. Lett. 22 15-17 |
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Abstract We analyse further the entanglement purification protocol proposed by Feng et al. [Phys. Lett. A 271(2000)44] in the case of imperfect local operations and measurements. It is found that this protocol allows of higher error threshold. Compared with the standard entanglement purification proposed by Bennett et al. [Phys. Rev. Lett. 76(1996)722], it turns out that this protocol is remarkably robust against the influences of imperfect local operations and measurements.
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Keywords:
03.67.-a
03.67.Pq
42.50.Dv
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Published: 01 January 2005
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