2020/01/31 by Wei Zhao, Zhihai Wang · 152 citations
Computer Science · Physics and Astronomy · #Atom (system on chip) #Atomic physics #Bound state #Coupling (piping) #Materials science #Mechanical and Optical Resonators #Optics #Photon #Physics #Quantum Information and Cryptography #Quantum mechanics #Quantum optics and atomic interactions #Reflection (computer programming) #Resonator #Scattering #Waveguide #quant-ph
paper · pdf · doi:10.1103/physreva.101.053855
published in Physical Review A 101(5) (American Physical Society) · 8 pages, 7 figures, Accepted by Phys. Rev. A
arxiv created 2020/05/05 · openalex created_date 2020/05/13 · openalex publication_date 2020/05/26 · arxiv updated 2020/06/01 · openalex updated_date 2026/08/05
In this paper, we investigate the single-photon scattering and bound states in a one-dimensional coupled-resonator waveguide which couples to a single artificial giant atom with two or more coupling points. When the atom couples to the waveguide via two resonators, the single-photon reflection rate is characterized by either Breit-Wigner or Fano lineshapes. When the atom couples to the waveguide via multiple resonators, we show numerically how the destructive interference effect leads to a complete single-photon reflection. We also find a phase-transition phenomena for the multiresonator coupling case, which reveals that the upper bound state only exists when the atom-waveguide coupling strength is above a critical value.