It is of fundamental interest in controlling the light–matter interaction for a long time in the field of quantum information processing. Here, we explore a model by coupling a giant atom with the dynamically-modulated coupled-resonator waveguide and find the bound state, where the light shows the localization effect and the atomic decay into resonator modes is inhibited, excited by a propagating photon. An analytical treatment based on the separation of the propagating states and localized states of light has been proposed and provides inspiring explanation of our finding, i.e., there supports a quantum channel where the propagating photon can be converted to the localized state through the quantum interference from light–atom interactions in three resonators at different frequency detunings. Our work therefore shows the potential for actively localizing the photon in a modulated coupled-resonator waveguide system interacting with the giant atom, and also points out a way to study the light–atom interaction in a synthetic frequency dimension that holds the similar Hamiltonian.

长期以来，控制光与物质的相互作用在量子信息处理领域具有重要意义。在这里，我们通过将巨型原子与动态调制的耦合谐振器波导耦合来探索模型，并找到束缚态，其中光显示定位效应并且原子衰减到谐振腔模式被抑制，由传播的光子激发。已经提出了一种基于光的传播态和局域态分离的分析处理，并为我们的发现提供了鼓舞人心的解释，即，支持一个量子通道，其中传播光子可以通过来自的量子干涉转换为局域态。在不同频率失谐的三个谐振器中的光原子相互作用。