Engineering the electromagnetic environment of a quantum emitter gives rise to a plethora of exotic light-matter interactions. In particular, photonic lattices can seed long-lived atom-photon bound states inside photonic band gaps. Here, we report on the concept and implementation of a novel microwave architecture consisting of an array of compact superconducting resonators in which we have embedded two frequency-tunable artificial atoms. We study the atom-field interaction and access previously unexplored coupling regimes, in both the single- and double-excitation subspace. In addition, we demonstrate coherent interactions between two atom-photon bound states, in both resonant and dispersive regimes, that are suitable for the implementation of swap and cz two-qubit gates. The presented architecture holds promise for quantum simulation with tunable-range interactions and photon transport experiments in the nonlinear regime.

中文翻译：

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控制约瑟夫森结谐振器阵列中的原子-光子束缚态

设计量子发射器的电磁环境会产生大量奇异的光物质相互作用。特别是，光子晶格可以在光子带隙内植入长寿命的原子-光子束缚态。在这里，我们报告了一种新型微波架构的概念和实现，该架构由一系列紧凑的超导谐振器组成，我们在其中嵌入了两个频率可调的人造原子。我们在单激发和双激发子空间中研究原子场相互作用并访问以前未探索的耦合机制。此外，我们展示了两个原子 - 光子束缚态之间的相干相互作用，在共振和色散状态下，适用于实现交换和cz两个量子比特门。所提出的架构有望用于具有可调范围相互作用的量子模拟和非线性状态下的光子传输实验。