Atom-photon dressed states in a waveguide-QED system with multiple giant atoms

Abstract

We study the properties of bound states in waveguide-QED systems consisting of multiple giant atoms coupled to a coupled-resonator waveguide. Based on the general analytical expressions for these states and the corresponding energy spectra, we analyze in detail the threshold conditions for the appearance of bound states and the photon-mediated interactions between dressed atoms for different configurations. In addition, when multiple giant atoms are coupled to the waveguide, different types of interacting atomic chain can be obtained by manipulating the coupling configurations. Accordingly, the energy spectra of the bound states form metaband structures in the photonic band gaps. This makes the system a useful platform for quantum simulation and quantum information processing.

arXiv comment24 pages, 8 figures

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• Quantum Mpemba effect from initial system-reservoir entanglement
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• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms
• Giant atom with disorders: Effects from imperfect couplings
• Virtual Atom-Photon Bound States and Spontaneous Emission Control
• Non-Markovian exceptional points in waveguide quantum electrodynamics
• Oscillating bound states in waveguide-QED system with two giant atoms
• Strongly coupled giant-atom waveguide quantum electrodynamics