Multipartite Entanglement of a Two-Separable State

作者:Gerke S*; Sperling J; Vogel W; Cai Y; Roslund J; Treps N; Fabre C
来源:Physical Review Letters, 2016, 117(11): 110502.
DOI:10.1103/PhysRevLett.117.110502

摘要

We consider a six-partite, continuous-variable quantum state that we have effectively generated by the parametric down-conversion of a femtosecond frequency comb. We show that, though this state is two-separable, i.e., it does not exhibit "genuine entanglement," it is undoubtedly multipartite entangled. The consideration of not only the entanglement of individual mode decompositions, but also of combinations of those, solves the puzzle and exemplifies the importance of studying different categories of multipartite entanglement.

  • 出版日期2016-9-6