Quadratic Bell inequalities as tests for multipartite entanglement
Quadratic Bell inequalities as tests for multipartite entanglement
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DOI：
10.1103/physrevlett.88.230406
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发表时间：
2002-06-10
影响因子：
8.6
通讯作者：
Uffink, J
中科院分区：
文献类型：
--
作者：
Uffink, J
这封信提出了量子力学不等式，对于n个自旋为1/2的粒子（n>2）的系统，这些不等式区分了完全纠缠态和至多n-1个粒子纠缠的态。这些不等式比Gisin和Bechmann-Pasquinucci [Phys. Lett. A 246，1（1998）]和Seevinck和Svetlichny [quant-ph/0201046]。
This Letter presents quantum mechanical inequalities which distinguish, for systems of n spin-1/2 particles (n>2 ), between fully entangled states and states in which at most n-1 particles are entangled. These inequalities are stronger than those obtained by Gisin and Bechmann-Pasquinucci [Phys. Lett. A 246, 1 (1998)] and by Seevinck and Svetlichny [quant-ph/0201046].