title: Experimental preparation of eight-partite cluster state for photonic qumodes.
abstract: The preparation of multipartite entangled states is the prerequisite for exploring quantum information networks and quantum computation. In this Letter, we present what we believe is the first experimental demonstration of an eight-partite spatially separated continuous variable (CV) cluster state of optical modes. Via the linearly optical transformation of eight squeezed states of light, the eight-partite cluster entangled state with amplitude and phase quadrature correlations are prepared. The generated eight entangled photonic qumodes are spatially separated, which provides valuable quantum resources for implementing CV quantum information protocols.
authors.affiliation: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006,China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Su
authors.forename: Yaping
authors.initials: Y
authors.lastname: Zhao
authors.forename: Shuhong
authors.initials: S
authors.lastname: Hao
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Jia
authors.forename: Changde
authors.initials: C
authors.lastname: Xie
authors.forename: Kunchi
authors.initials: K
authors.lastname: Peng