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arXiv 2312.06151quant-ph
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超越量子态的测量设备无关探测

Measurement-Device-Independent Detection of Beyond-Quantum State

Baichu Yu, Masahito Hayashi

AI总结:

针对标准Bell测试无法探测超越量子态的问题,提出一种测量设备无关(MDI)测试,通过量子输入态与跨系统量子测量区分超越量子态与量子态,其性能独立于被测态和测量算符形式,在实际场景中具优势。

摘要:

在量子理论中,两方复合系统上的量子态与任何具有张量积形式的测量元素都能实现非负概率。然而,也存在满足上述条件的非量子态。此类态被称为超越量子态,且无法通过标准Bell测试探测。为了区分超越量子态与量子态,我们提出了一种用于超越量子态探测的测量设备无关(MDI)测试,它由各方相应的量子输入态以及各方跨越输入系统与目标系统的量子测量组成。我们协议的性能独立于被测态和测量算符的形式,这在实际场景中提供了优势。我们还讨论了输入集合层析完整性对于探测的重要性。

英文摘要:

In quantum theory, a quantum state on a composite system of two parties realizes a non-negative probability with any measurement element with a tensor product form. However, there also exist non-quantum states which satisfy the above condition. Such states are called beyond-quantum states, and cannot be detected by standard Bell tests. To distinguish a beyond-quantum state from quantum states, we propose a measurement-device-independent (MDI) test for beyond-quantum state detection, which is composed of quantum input states on respective parties and quantum measurements across the input system and the target system on respective parties. The performance of our protocol is independent of the forms of the tested states and the measurement operators, which provides an advantage in practical scenarios. We also discuss the importance of tomographic completeness of the input sets to the detection.

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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