Polarization-entanglement purification and concentration using cross-kerr nonlinearity
作者： Guang-Sheng Jin , Chuan Wang , Yong Zhang
关键词:
摘要: We present an entanglement purification protocol and concentration in this paper, resorting to cross-Kerr nonlinearities interference of two coherent beams. Our can be used purify photon pairs not only from ideal entangled source but also a parametric down-conversion by the measurement on beams without giant media. quantum nondemolition detection concentrate less pure states efficiently. protocols are more flexibilities distinguishing phases during homodyne detection.
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