Abstract
Two-photon four-dimensional spatial modes partially entangled Dicke state can be compactly generated from six concurrent spontaneous parametric down-conversion processes by cascading poling domain structures in 5% MgO-doped poled lithium niobate bulk crystal. Entanglement concentration of the two-photon four-dimensional spatial modes partially entangled Dicke state can be realized by using quantum nondestructive detection of nonlinear Kerr medium, optical beam splitter, and quantum gate operation.
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This work was supported by the National Natural Science Foundation of China (NSFC) (11604115).
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Shi, J. Entanglement generation and entanglement concentration of two-photon four-dimensional spatial modes partially entangled Dicke state. Quantum Inf Process 16, 132 (2017). https://doi.org/10.1007/s11128-017-1583-1
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DOI: https://doi.org/10.1007/s11128-017-1583-1