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arXiv 1802.02170quant-ph
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从贝尔定理证明量子计算机的构建块

Certifying the building blocks of quantum computers from Bell's theorem

Pavel Sekatski, Jean-Daniel Bancal, Sebastian Wagner, Nicolas Sangouard

摘要:

量子计算机的能力依赖于其组件忠实地维护和准确处理量子信息的能力。由于这种性质无法通过经典的认证方法,因此需要全新的协议来保证基本组件适用于量子计算。这些协议必须与设备无关,也就是说,如果要将块限定为所有可能的用途,则它们不能依赖于实际实现的特定物理描述。贝尔定理的提出是为了以与器件无关的方式证明产生或测量量子态的块。在这篇手稿中,我们提供了缺失的部分:一种基于贝尔定理的方法,以证明量子信息的存储、处理和传输等相干操作。这就完成了验证量子计算机所有构建模块所需的工具集。我们的方法对实验缺陷具有鲁棒性,因此可以很容易地用来证明今天的量子设备有资格用于未来的量子计算机。

英文摘要:

The power of quantum computers relies on the capability of their components to maintain faithfully and process accurately quantum information. Since this property eludes classical certification methods, fundamentally new protocols are required to guarantee that elementary components are suitable for quantum computation. These protocols must be device-independent, that is, they cannot rely on a particular physical description of the actual implementation if one is to qualify a block for all possible usages. Bell's theorem has been proposed to certify, in a device-independent way, blocks either producing or measuring quantum states. In this manuscript, we provide the missing piece: a method based on Bell's theorem to certify coherent operations such as storage, processing and transfer of quantum information. This completes the set of tools needed to certify all building blocks of a quantum computer. Our method is robust to experimental imperfections, and so can be readily used to certify that today's quantum devices are qualified for usage in future quantum computers.

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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