Single-photon scattering and bound states in a one-dimensional waveguide with topological giant atom

• URL: http://arxiv.org/abs/2401.02104v2
• Date: Thu, 13 Jun 2024 06:15:45 GMT
• Title: Single-photon scattering and bound states in a one-dimensional waveguide with topological giant atom
• Authors: Wei Zhao, Tian Tian, Zhihai Wang,
• Abstract summary: We investigate the single photon scattering and bound states in a coupled resonator waveguide (CRW) which couples to a topological giant atom (TGA) via two distant sites. By modulating the topological phase of the TGA, the incident photon in the CRW can be completely reflected or transmitted.
• Score: 7.335735216327911
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: We investigate the single photon scattering and bound states in a coupled resonator waveguide (CRW) which couples to a topological giant atom (TGA) via two distant sites. Here, the TGA is constructed by a one dimensional Su-Schrieffer-Heeger (SSH) chain with finite length. By modulating the topological phase of the TGA, the incident photon in the CRW can be completely reflected or transmitted, and is therefore beneficial to design the coherent photonic device. Meanwhile, we also achieve two pairs of bound states locating respectively above and blow the continuum. Whether the gap is open or closed depends on the boundary condition of the TGA. Therefore, the combination of the topology and the interference provides us an exciting opportunity to manipulate the photonic state in the context of waveguide quantum electrodynamics.

Related papers

• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Single-photon scattering in giant-atom topological-waveguide-QED systems [1.2479554210753663]
  We study single-photon scattering in a Su-Schrieffer-Heeger (SSH) waveguide coupled to either one or two two-level giant atoms. We find that a single photon in the SSH waveguide can be completely reflected or transmitted by choosing proper coupling configurations. This work will inspire the development of controllable single-photon devices based on the giant-atom topological-waveguide-QED systems.
  arXiv  Detail & Related papers  (2024-08-26T10:57:23Z)
• Phase-controlled bound states in giant atom waveguide QED setup [4.344972106140322]
  We find the phase-controlled bound state out of the continuum(BOC) and bound state in the continuum(BIC) in an artificial giant atom dressed one-dimensional photonic waveguide. We predict the quantum beats in the atomic and photonic dynamical evolution.
  arXiv  Detail & Related papers  (2024-06-13T06:06:47Z)
• Dissipative stabilization of maximal entanglement between non-identical emitters via two-photon excitation [49.1574468325115]
  Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement. We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
  arXiv  Detail & Related papers  (2023-06-09T16:49:55Z)
• Quantum light-matter interactions in structured waveguides [1.6295305195753724]
  We explore special features of quantum light-matter interactions inside structured waveguides due to their finite bandwidth, band edges, and non-trivial topological properties. We study single-photon dynamics in a heterojunction of a long TB and short SSH waveguide connected to a 2LE at the SSH end.
  arXiv  Detail & Related papers  (2023-04-26T06:17:35Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• Photonic Bound States and Scattering Resonances in Waveguide QED [6.422921106366847]
  We study the emergence of two types of two-photon bounds states in waveguides of any chirality. We use an effective Hamiltonian approach to determine the properties of the two-photon bound states.
  arXiv  Detail & Related papers  (2021-10-12T15:42:24Z)
• Qubit-photon bound states in topological waveguides with long-range hoppings [62.997667081978825]
  Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states. We study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases. We consider the coupling of emitters to the edge modes appearing in the different topological phases.
  arXiv  Detail & Related papers  (2021-05-26T10:57:21Z)
• Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
  We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide. Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
  arXiv  Detail & Related papers  (2020-11-24T07:06:36Z)
• Hyperentanglement in structured quantum light [50.591267188664666]
  Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
  arXiv  Detail & Related papers  (2020-06-02T18:00:04Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.