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arXiv 1407.2146quant-ph
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利用Hardy悖论实现设备无关Schmidt秩证明

Device independent Schmidt rank witness by using Hardy paradox

Amit Mukherjee, Arup Roy, Some Sankar Bhattacharya, Subhadipa Das, Md. Rajjak Gazi, Manik Banik

摘要:

两体纯态的Schmidt秩是纠缠的一个证明。在局域操作+经典通信(LOCC)下它是单调的,并且对量子态的LOCC可转换性进行了限制。因此,从信息论的角度来看,识别未知量子态的施密特秩是非常重要的。在这项工作中,它表明,一个修改后的版本的哈代的论点,揭示了矛盾的量子理论与本地现实主义,原来是有用的检查最小施密特秩的未知状态,因此也是最小尺寸的系统。在这样的任务中使用哈迪检验提供了实际优点:可以在不知道实验装置的详细功能的情况下确定施密特等级,即,Hardy检验足以成为设备独立的Schmidt秩见证。

英文摘要:

Schmidt rank of bipartite pure state serves as a testimony of entanglement. It is a monotone under local operation + classical communications (LOCC) and puts restrictions in LOCC convertibility of quantum states. Identifying the Schmidt rank of an unknown quantum state therefore seek importance from information theoretic perspective. In this work it is shown that a modified version of Hardy's argument, which reveals the contradiction of quantum theory with local realism, turns out to be useful for inspecting the minimal Schmidt rank of the unknown state and hence also the minimal dimension of the system. Use of Hardy's test in such task provides a practical advantage: the Schmidt rank can be determined without knowing the detailed functioning of the experimental devices i.e., Hardy's test suffices to be a device independent Schmidt rank witness.

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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