Authors: Lan Zhou XingFu Wang YuBo Sheng
Publish Date: 2014/01/08
Volume: 53, Issue: 5, Pages: 1752-1766
Abstract
In this paper we put forward an effective ECP for arbitrary lessentangled Natom GHZ state with the help of the photonic Faraday rotation In our protocol we only require one pair of lessentangled atom state one auxiliary atom and one auxiliary photon and can complete the concentration task with relatively high success probability Moreover our ECP can be used repeatedly to further increase the success probability Especially if consider the practical operation and imperfect detection our protocol is more efficient This ECP may be useful in current quantum information processingThis work is supported by the National Natural Science Foundation of China under Grant Nos 11104159 11347110 the Scientific Research Foundation of Nanjing University of Posts and Telecommunications Grant No NY213054 and the Priority Academic Program Development of Jiangsu Higher Education Institutions
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