This review describes the emerging field of waveguide quantum electrodynamics concerned with the interaction of photons propagating in a waveguide with localized quantum emitters. The collective emitter-photon interactions can lead to both enhanced and suppressed coupling compared to the case of independent emitters. Here the focus is on guided photons and ordered emitter arrays, manifesting superradiant and subradiant states, bound photon states, and quantum correlations with promising quantum information applications. Recent groundbreaking experiments performed with different quantum platforms, including cold atoms, superconducting qubits, semiconductor quantum dots, and quantum solid-state defects, are highlighted. The review also provides a comprehensive introduction to theoretical techniques to study the interactions and dynamics of these emitters and the photons in the waveguide.

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波导量子电动力学：集体辐射率和光子-光子相关性

这篇综述描述了波导量子电动力学的新兴领域，该领域涉及波导中传播的光子与局域量子发射器的相互作用。与独立发射器的情况相比，集体发射器-光子相互作用可以导致增强和抑制耦合。这里的重点是引导光子和有序发射器阵列，表现出超辐射和次辐射态、束缚光子态以及与有前景的量子信息应用的量子相关性。重点介绍了最近在不同量子平台上进行的突破性实验，包括冷原子、超导量子位、半导体量子点和量子固态缺陷。该评论还全面介绍了研究这些发射器和波导中光子的相互作用和动力学的理论技术。