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arXiv 2510.00534quant-ph
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光子混合量子计算

Photonic Hybrid Quantum Computing

Korea Institute of Science and Technology (KIST)(韩国科学技术院);Korea University of Science and Technology (UST)(韩国科学技术院);Seoul National University(首尔大学);The University of Sydney(悉尼大学);Korea Institute for Advanced Study(韩国高等研究院);Imperial College London(帝国理工学院)

Jaehak Lee, Srikrishna Omkar, Yong Siah Teo, Seok-Hyung Lee, Hyukjoon Kwon, M. S. Kim, Hyunseok Jeong

AI总结:

本文探讨了光子混合量子计算,通过结合离散和玻色编码的优势,缓解光子间相互作用弱的问题,总结了理论进展和实验成果,分析了其优势与挑战。

摘要:

光子是量子信息的普遍载体:它们速度快,退相干小,且不需要巨大的低温设施。然而,其内在弱的光子-光子相互作用仍然是扩展量子计算的关键障碍。本文综述了混合光子量子计算,利用多种光子自由度结合离散和玻色编码的互补优势,显著缓解这一挑战。我们首先概述了离散变量、原生连续变量和玻色编码范式的原理。然后总结了最近的理论进展和最先进实验演示,特别强调混合方法。其独特优势,如高效生成资源态和几乎弹性的(无主动反馈)操作,被突出显示,同时指出剩余技术挑战。为了便于清晰比较,我们明确呈现了容错量子计算所需的误差阈值和资源开销。本文的工作提供了一个聚焦的概述,阐明了混合方法如何实现可扩展和兼容的量子计算架构。

英文摘要:

Photons are a ubiquitous carrier of quantum information: they are fast, suffer minimal decoherence, and do not require huge cryogenic facilities. Nevertheless, their intrinsically weak photon-photon interactions remain a key obstacle to scalable quantum computing. This review surveys hybrid photonic quantum computing, which exploits multiple photonic degrees of freedom to combine the complementary strengths of discrete and bosonic encodings, thereby significantly mitigating the challenge of weak photon-photon interactions. We first outline the basic principles of discrete-variable, native continuous-variable, and bosonic-encoding paradigms. We then summarise recent theoretical advances and state-of-the-art experimental demonstrations with particular emphasis on the hybrid approach. Its unique advantages, such as efficient generation of resource states and nearly ballistic (active-feedforward-free) operations, are highlighted alongside remaining technical challenges. To facilitate a clear comparison, we explicitly present the error thresholds and resource overheads required for fault-tolerant quantum computing. Our work offers a focused overview that clarifies how the hybrid approach enables scalable and compatible architectures for quantum computing.

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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