Optical multi-Fano-like phenomena with giant atom–waveguide systems

Coupling between giant atoms and waveguides is expected to be of great importance in the field of quantum information science. In this paper, we study the influence of frequency detuning between incident photons and giant atoms on photon scattering based on the model of giant atoms coupling with one-dimensional waveguide where atoms are placed in a braided structure. The system may be designed with microwave transmission line and superconducting quantum bits. Comparing with various simulation results with different numbers of giant atoms and different atom–waveguide dipole interaction intensities, we confirm that the system can produce multi-Fano-like resonance, which may be useful in the field of quantum sensing.