Experimental generation of genuine four-partite entangled states with total three-party correlation for continuous variables
Aihong Tan, Yu Wang, Xiaoli Jin, Xiaolong Su, Xiaojun Jia, Jing Zhang, Changde Xie, Kunchi Peng · Physical Review A · 2008
We experimentally prepare a type of continuous variable genuine four-partite entangled states, the quantum correlation property of which is different from that of the four-mode Greenberger-Horne-Zeilinger and cluster states, and which has not any qubit counterpart to be proposed at present. In the criterion inequalities for the full inseparability of the genuine four-partite entangled states, the amplitude and phase quadrature correlation variances totally consisting of three-party combination from the four entangled modes are involved. The measured correlation variances among the quadratures of the prepared entangled states satisfy the sufficient requirements for the full inseparability.