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arXiv 2003.03859quant-ph
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独立量子态和测量设备的半设备独立认证

Semi-device-independent certification of independent quantum state and measurement devices

Armin Tavakoli

摘要:

证明量子设备的行为符合预期对量子信息科学至关重要。在这里,方法开发的状态准备设备和测量设备的认证的基础上,与独立的设备的测量和测量实验。实验者假设设备的独立性和希尔伯特空间维度的知识。因此,不需要对实验的任何部分进行精确表征。该认证是基于一个随机版本的明确的状态歧视和目标的类状态合奏对应于量子$t$ -设计的任何大小和任何维度。这些量子设计是一组状态,在这些状态上,任何$t$次多项式的平均值等于其在所有纯态上的平均值,并且它们容纳了量子信息处理中许多最有用的离散结构。此外,它表明,相同的实验也证明了测量设备的检测效率,以及它们的非投影性质。所提出的方法可以很容易地在实验中实现。

英文摘要:

Certifying that quantum devices behave as intended is crucial for quantum information science. Here, methods are developed for certification of both state preparation devices and measurement devices based on prepare-and-measure experiments with independent devices. The experimenter assumes the independence of the devices and knowledge of the Hilbert space dimension. Thus no precise characterisation of any part of the experiment is required. The certification is based on a randomised version of unambiguous state discrimination and targets the class of state ensembles corresponding to quantum $t$-designs of any size and any dimension. These quantum designs are sets of states over which the average of any $t$-degree polynomial equals its average over all pure states, and they accommodate many of the most useful discrete structures in quantum information processing. Furthermore, it is shown that the same experiments also certify the detection efficiency of the measurement devices, as well as their non-projective nature. The presented methods can readily be implemented in experiments.

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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