Greenberger-Horne-Zeilinger nonlocality in phase space
Greenberger-Horne-Zeilinger nonlocality in phase space
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DOI：
10.1103/physreva.63.022106
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发表时间：
2000-06
影响因子：
2.9
通讯作者：
P. Loock;S. Braunstein
中科院分区：
文献类型：
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作者：
P. Loock;S. Braunstein
我们证明，量子位的多部分纠缠 Greenberger-Horne-Zeilinger 状态的连续变量类似物违反了局部现实理论强加的贝尔型不等式。我们的结果表明，这些非最大纠缠连续变量状态的非定域性程度（以最大违反为代表）随着参与方数量的增加而增加。对于最大纠缠的量子位态来说，这种增长似乎并不是指数级的大，而是对于更多的参与方来说会减少。
We show that the continuous-variable analogues to the multipartite entangled Greenberger-Horne-Zeilinger states of qubits violate Bell-type inequalities imposed by local realistic theories. Our results suggest that the degree of nonlocality of these nonmaximally entangled continuous-variable states, represented by the maximum violation, grows with increasing number of parties. This growth does not appear to be exponentially large as for the maximally entangled qubit states, but rather decreases for larger numbers of parties.