Scheme for Concentration of Unknown Photonic GHZ Entangled States via Linear Optical Elements
Zhang Gang, Yang Ming, Zhuo‐Liang Cao · Communications in Theoretical Physics · 2006
We propose two schemes to concentrate unknown nonmaximally tripartite GHZ entangled states via linear optical elements. The finial maximally entangled states obtained from our schemes are shared by two or three parties. Our schemes only need polarizing beam splitters and single-photon detectors. In addition, the schemes can be demonstrated within current experimental technology.