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arXiv quant-ph/0010049quant-ph
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检验贝尔不等式的酉变换

Unitary transformations for testing Bell inequalities

S. D. Bartlett, D. A. Rice, B. C. Sanders, J. Daboul, H. de Guise

摘要:

结果表明,贝尔不等式破坏的光学实验检验可以用真空态的SU(1,1)变换和光子符合探测来描述。所有可能检验的集合由Sp(8,$\Bbb R$)的各种SU(1,1)子群描述。除了为物理上不同的贝尔不等式检验建立一个通用的形式体系外,还阐明了贝尔不等式违反后选择检验的异同.这种分析的结果是,贝尔不等式测试进行了一个非常一般的版本的SU(1,1)相干态,并计算和讨论符合探测的贝尔不等式的理论破坏。这种贝尔态的群论方法与贝尔态测量有关,例如在量子隐形传态中进行的测量。

英文摘要:

It is shown that optical experimental tests of Bell inequality violations can be described by SU(1,1) transformations of the vacuum state, followed by photon coincidence detections. The set of all possible tests are described by various SU(1,1) subgroups of Sp(8,$\Bbb R$). In addition to establishing a common formalism for physically distinct Bell inequality tests, the similarities and differences of post--selected tests of Bell inequality violations are also made clear. A consequence of this analysis is that Bell inequality tests are performed on a very general version of SU(1,1) coherent states, and the theoretical violation of the Bell inequality by coincidence detection is calculated and discussed. This group theoretical approach to Bell states is relevant to Bell state measurements, which are performed, for example, in quantum teleportation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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