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arXiv 2302.01495quant-phphysics.optics
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量子频率处理器的表征

Characterization of Quantum Frequency Processors

Hsuan-Hao Lu, Nicholas A. Peters, Andrew M. Weiner, Joseph M. Lukens

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AI总结：

本文综述量子频率处理器（QFP）的实验表征方法，区分“开箱”干涉仪与“黑箱”量子操作路径，并介绍首次频率仓操作完整量子过程层析。

摘要：

频率仓量子比特与波分复用光波通信具有独特的协同作用，为利用现有光纤基础设施构建量子网络提供了宝贵机遇。尽管频率仓态的相干操控需要高度可控的多光谱模式干涉，但量子频率处理器（QFP）利用标准电信组件为门综合提供了一条可扩展路径。在此，我们总结了实验性QFP表征的最新进展。我们将把QFP视为多端口干涉仪、基于物理动机的“开箱”方法与将其视为一般量子操作的“黑箱”方法加以区分，重点介绍了多种技术的假设与结果，包括可调分束器的量子过程层析——据我们所知，这是首次对任何频率仓操作进行完整过程层析。随着QFP日益从原理验证型桌面演示走向集成器件和部署式量子网络实验，我们的发现应为未来的表征工作提供参考。

英文摘要：

Frequency-bin qubits possess unique synergies with wavelength-multiplexed lightwave communications, suggesting valuable opportunities for quantum networking with the existing fiber-optic infrastructure. Although the coherent manipulation of frequency-bin states requires highly controllable multi-spectral-mode interference, the quantum frequency processor (QFP) provides a scalable path for gate synthesis leveraging standard telecom components. Here we summarize the state of the art in experimental QFP characterization. Distinguishing between physically motivated ''open box'' approaches that treat the QFP as a multiport interferometer, and ''black box'' approaches that view the QFP as a general quantum operation, we highlight the assumptions and results of multiple techniques, including quantum process tomography of a tunable beamsplitter -- to our knowledge the first full process tomography of any frequency-bin operation. Our findings should inform future characterization efforts as the QFP increasingly moves beyond proof-of-principle tabletop demonstrations toward integrated devices and deployed quantum networking 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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