Sculpting ultrastrong light-matter coupling through spatial matter structuring

• URL: http://arxiv.org/abs/2311.18278v1
• Date: Thu, 30 Nov 2023 06:31:56 GMT
• Title: Sculpting ultrastrong light-matter coupling through spatial matter structuring
• Authors: Joshua Mornhinweg (1 and 4), Laura Diebel (1), Maike Halbhuber (1), Josef Riepl (1), Erika Cortese (2), Simone De Liberato (2 and 3), Dominique Bougeard (1), Rupert Huber (1), Christoph Lange (4) ((1) Department of Physics, University of Regensburg, Germany, (2) School of Physics and Astronomy, University of Southampton, United Kingdom, (3) IFN - Istituto di Fotonica e Nanotecnologie, CNR, Italy, (4) Department of Physics, TU Dortmund University, Germany)
• Abstract summary: We experimentally implement a novel strategy to sculpt ultrastrong multi-mode coupling. We control the number of light-matter coupled modes, their octave-spanning frequency spectra, and their response to magnetic tuning. This offers novel pathways for controlling dissipation, tailoring quantum light sources, nonlinearities, correlations, as well as entanglement in quantum information processing.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The central theme of cavity quantum electrodynamics is the coupling of a single optical mode with a single matter excitation, leading to a doublet of cavity polaritons which govern the optical properties of the coupled structure. Especially in the ultrastrong coupling regime, where the ratio of the vacuum Rabi frequency and the quasi-resonant carrier frequency of light, $\Omega_{\mathrm R}/\omega_{\mathrm c}$, approaches unity, the polariton doublet bridges a large spectral bandwidth $2\Omega_{\mathrm R}$, and further interactions with off-resonant light and matter modes may occur. The resulting multi-mode coupling has recently attracted attention owing to the additional degrees of freedom for designing light-matter coupled resonances, despite added complexity. Here, we experimentally implement a novel strategy to sculpt ultrastrong multi-mode coupling by tailoring the spatial overlap of multiple modes of planar metallic THz resonators and the cyclotron resonances of Landau-quantized two-dimensional electrons, on subwavelength scales. We show that similarly to the selection rules of classical optics, this allows us to suppress or enhance certain coupling pathways and to control the number of light-matter coupled modes, their octave-spanning frequency spectra, and their response to magnetic tuning. This offers novel pathways for controlling dissipation, tailoring quantum light sources, nonlinearities, correlations as well as entanglement in quantum information processing.

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)
• Mode-multiplexing deep-strong light-matter coupling [0.0]
  We show a new regime of record-strong light-matter interaction which exploits the cooperative dipole moments of multiple, highly non-resonant magnetoplasmon modes. The extreme interaction drives strongly subcycle exchange of vacuum energy between multiple bosonic modes. This offers avenues towards tailoring phase transitions by coupling otherwise non-interacting modes.
  arXiv  Detail & Related papers  (2023-09-13T12:27:35Z)
• 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)
• Nonclassical light generation and control from laser-driven semiconductor intraband excitations [0.0]
  We investigate the generation of higher-order harmonics from a quantum optics perspective. We find intricate but sufficiently mild modifications of the fundamental mode and coherent displacements. Similar to high-harmonic generation in atoms, all radiation field modes are entangled, allowing for potential novel protocols for quantum information processing.
  arXiv  Detail & Related papers  (2022-11-11T12:59:15Z)
• Resolving Fock states near the Kerr-free point of a superconducting resonator [51.03394077656548]
  We have designed a tunable nonlinear resonator terminated by a SNAIL (Superconducting Asymmetric Inductive eLement) We have excited photons near this Kerr-free point and characterized the device using a transmon qubit.
  arXiv  Detail & Related papers  (2022-10-18T09:55:58Z)
• Photon generation and entanglement in a double superconducting cavity [105.54048699217668]
  We study the dynamical Casimir effect in a double superconducting cavity in a quantum electrodynamics architecture. We study the creation of photons when the walls oscillate harmonically with a small amplitude.
  arXiv  Detail & Related papers  (2022-07-18T16:43:47Z)
• Optical magnetism and wavefront control by arrays of strontium atoms [0.0]
  We show how bosonic Sr atoms in planar optical lattices can be engineered to exhibit optical magnetism. We provide a detailed scheme to utilize excitations of such cooperative modes to form an atomic Huygens' surface.
  arXiv  Detail & Related papers  (2022-05-16T14:58:26Z)
• Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
  We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
  arXiv  Detail & Related papers  (2022-03-28T19:37:08Z)
• Generalization of the Tavis-Cummings model for multi-level anharmonic systems: insights on the second excitation manifold [0.0]
  This work contrasts predictions from the Tavis-Cummings (TC) model, in which the material is a collection of two-level systems. We simplify the brute-force diagonalization of a gigantic $N2times N2$ Hamiltonian. We find resonant conditions between bipolaritons and anharmonic transitions where two-photon absorption can be enhanced.
  arXiv  Detail & Related papers  (2022-02-03T06:33:42Z)
• 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)
• Optical mode conversion in coupled Fabry-P\'erot resonators [0.0]
  We introduce tunable impedance between coupled Fabry-P'erot resonators as a powerful tool for manipulation of the spatial and temporal properties of optical fields. We experimentally demonstrate a NIR resonator whose finesse is tunable over a decade, and an optical mode converter with efficiency. $!!75%$ for the first six Hermite-Gauss modes.
  arXiv  Detail & Related papers  (2020-05-24T19:04:42Z)

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.