期刊
PHYSICAL REVIEW A
卷 85, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.052328
关键词
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资金
- National Natural Science Foundation of China [61102053, 61170228, 60970109, 60801051]
- SJTU PRP [T030PRP18001, T030PRP19035]
- State Key Laboratory Foundation [2011GZKF031202]
We theoretically show that six-partite continuous-variable entanglement can be generated by nonlinear optical processes conducted in a designed photonic crystal-like periodically poled lithium niobat (PPLN). The processes consist of a nonlinear parametric down-conversion and four sum-frequency processes. The characteristics of the six-partite entanglement among the six beams are analyzed both above and below the threshold by applying a sufficient inseparability criterion for multipartite continuous-variable entanglement. We investigated our proposal for a specific case of a PPLN optical superlattice with fixed light and material properties.
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