Generalized Bell inequality and a method for its verification

被引:7
作者
Andreev, V. A. [1 ]
机构
[1] RAS, PN Lebedev Phys Inst, Moscow 117901, Russia
关键词
quantum mechanics; entangled state; density matrix; Bell inequality;
D O I
10.1007/s11232-007-0113-1
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We use the reduced density matrix of the two-particle spin state to construct a generalized Bell-Clauser-Horne -Shimony-Holt inequality. For each speciffic state and under a special choice of the vectors (a) over right arrow, (b) over right arrow, (c) over right arrow, and (d) over right arrow, this inequality becomes an exact equality. We show how such vectors can be found using the reduced density matrix. Both sides of this equality have a speciffic numerical value. We indicate the connection of this number with the measure of entanglement of the two-particle spin state.
引用
收藏
页码:1286 / 1298
页数:13
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