Probing Topological Anderson Transition in Quasiperiodic Photonic Lattices via Chiral Displacement and Wavelength Tuning

• URL: http://arxiv.org/abs/2503.07175v2
• Date: Sat, 15 Mar 2025 20:07:57 GMT
• Title: Probing Topological Anderson Transition in Quasiperiodic Photonic Lattices via Chiral Displacement and Wavelength Tuning
• Authors: Abhinav Sinha, Trideb Shit, Avinash Tetarwal, Diptiman Sen, Sebabrata Mukherjee,
• Abstract summary: We report on a topological Anderson transition caused by quasiperiodic intra-cell coupling disorder in photonic Su-Schrieffer-Heeger lattices.<n>As the quasiperiodic strength is varied, the system exhibits a reentrant transition from a trivial phase to a topological phase.<n>Unlike the traditional detection of photonic topological edge modes, we measure the mean chiral displacement from the transport of light.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The interplay of topology and disorder in quantum dynamics has recently attracted significant attention across diverse platforms, including solid-state devices, ultracold atoms, and photonic systems. Here, we report on a topological Anderson transition caused by quasiperiodic intra-cell coupling disorder in photonic Su-Schrieffer-Heeger lattices. As the quasiperiodic strength is varied, the system exhibits a reentrant transition from a trivial phase to a topological phase and back to a trivial phase, accompanied by the closing and reopening of the band gap around zero energy. Unlike the traditional detection of photonic topological edge modes, we measure the mean chiral displacement from the transport of light in the bulk of the lattices. In our photonic lattices with a fixed length, the propagation dynamics is retrieved by varying the wavelength of light, which tunes the inter-waveguide couplings.

Related papers

• Quantum tomography of the superfluid-insulator transition for a mesoscopic atomtronic ring [3.818125813905444]
  We provide a phase-space perspective for the analysis of the superfluid-insulator transition for finite-size Bose-Hubbard circuits. We explore how the eigenstates parametrically evolve as the inter-particle interaction is varied. Finally we focus on the formation of the lowest Goldstone and Higgs bands.
  arXiv  Detail & Related papers  (2025-04-20T06:17:10Z)
• Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
  We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system. Our findings open a new way to engineer dissipation-induced entanglement.
  arXiv  Detail & Related papers  (2024-11-11T08:39:32Z)
• A phase microscope for quantum gases [0.0]
  Coherence properties are central to quantum systems and are at the heart of phenomena such as superconductivity. We study coherence properties of an ultracold Bose gas in a two-dimensional optical lattice across the thermal phase transition.
  arXiv  Detail & Related papers  (2024-10-14T15:17:45Z)
• Topological inverse band theory in waveguide quantum electrodynamics [1.6036148576537623]
  Topological phases play a crucial role in the fundamental physics of light-matter interaction and emerging applications of quantum technologies. Here, we introduce a concept of the inverse energy band and explore analytically topological scattering in a waveguide with an array of quantum emitters.
  arXiv  Detail & Related papers  (2023-01-13T11:17:06Z)
• Anomalous criticality with bounded fluctuations and long-range frustration induced by broken time-reversal symmetry [0.0]
  We consider a one-dimensional Dicke lattice with complex photon hopping amplitudes. We investigate the influence of time-reversal symmetry breaking due to synthetic magnetic fields.
  arXiv  Detail & Related papers  (2022-08-03T18:00:04Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Coherent single-photon scattering spectra for a giant-atom waveguide-QED system beyond dipole approximation [0.0]
  We investigate the single-photon scattering spectra of a giant atom coupled to a one dimensional waveguide via multiple connection points or a continuous coupling region. We find that under the Markovian limit, the phase decay is detuning-independent, resulting in Lorentzian lineshapes. In the non-Markovian regime, the accumulated phases become detuning-dependent, giving rise to non-Lorentzian lineshapes.
  arXiv  Detail & Related papers  (2022-01-13T06:52:18Z)
• Topological transitions with continuously monitored free fermions [68.8204255655161]
  We show the presence of a topological phase transition that is of a different universality class than that observed in stroboscopic projective circuits. We find that this entanglement transition is well identified by a combination of the bipartite entanglement entropy and the topological entanglement entropy.
  arXiv  Detail & Related papers  (2021-12-17T22:01:54Z)
• Non-Hermitian topological phase transitions in superlattices and the optical Dirac equation [0.0]
  Optical superlattices with sublattice symmetry subjected to a synthetic imaginary gauge field undergo a topological phase transition in the Bloch energy spectrum. A simple photonic system displaying such a phase transition is discussed, which is based on light coupling in co-propagating gratings.
  arXiv  Detail & Related papers  (2021-09-03T05:50:54Z)
• 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)
• 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)
• Bulk detection of time-dependent topological transitions in quenched chiral models [48.7576911714538]
  We show that the winding number of the Hamiltonian eigenstates can be read-out by measuring the mean chiral displacement of a single-particle wavefunction. This implies that the mean chiral displacement can detect the winding number even when the underlying Hamiltonian is quenched between different topological phases.
  arXiv  Detail & Related papers  (2020-01-16T17:44:52Z)

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.