Cavity-induced exciton localisation and polariton blockade in two-dimensional semiconductors coupled to an electromagnetic resonator

• URL: http://arxiv.org/abs/2103.14484v3
• Date: Tue, 22 Feb 2022 07:55:35 GMT
• Title: Cavity-induced exciton localisation and polariton blockade in two-dimensional semiconductors coupled to an electromagnetic resonator
• Authors: E. V. Denning, M. Wubs, N. Stenger, J. Mork and P. T. Kristensen
• Abstract summary: Recent experiments have demonstrated strong light-matter coupling between electromagnetic nanoresonators and pristine sheets of two-dimensional semiconductors. We present a first-principles microscopic quantum theory for the interaction between excitons in an infinite sheet of two-dimensional material and a localised electromagnetic resonator. We predict that polariton blockade due to nonlinear exciton-exciton interactions is well within reach for nanoresonators coupled to transition-metal dichalcogenides.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent experiments have demonstrated strong light-matter coupling between electromagnetic nanoresonators and pristine sheets of two-dimensional semiconductors, and it has been speculated whether these systems can enter the quantum regime operating at the few-polariton level. To address this question, we present a first-principles microscopic quantum theory for the interaction between excitons in an infinite sheet of two-dimensional material and a localised electromagnetic resonator. We find that the light-matter interaction breaks the symmetry of the otherwise translation-invariant system and thereby effectively generates a localised exciton mode, which is coupled to an environment of residual exciton modes. This dissipative coupling increases with tighter lateral confinement, and our analysis reveals this to be a potential challenge in realising nonlinear exciton-exciton interaction. Nonetheless, we predict that polariton blockade due to nonlinear exciton-exciton interactions is well within reach for nanoresonators coupled to transition-metal dichalcogenides, provided that the lateral resonator mode confinement can be sufficiently small that the nonlinearity overcomes the polariton dephasing caused by phonon interactions.

Related papers

• Nonlinear spectroscopy of semiconductor moiré materials [0.0]
  We use time-resolved nonlinear pump--probe measurements to reveal features of semiconductor moir'e materials. We generate a high density of virtual excitons or exciton--polarons in various moir'e minibands.
  arXiv  Detail & Related papers  (2024-02-26T15:02:51Z)
• Entangling two exciton modes using exciton optomechanics [4.561414434532408]
  We propose to entangle two exciton modes in an exciton-optomechanics system. The protocol is within reach of current technology and may become a promising approach for preparing excitonic entanglement.
  arXiv  Detail & Related papers  (2024-02-05T04:07:20Z)
• Magnetic-field-induced cavity protection for intersubband polaritons [52.77024349608834]
  We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical transition due to the roughness of the interface of the quantum well from a Lorentzian to a Gaussian one.
  arXiv  Detail & Related papers  (2022-10-14T18:00:03Z)
• Probing the symmetry breaking of a light--matter system by an ancillary qubit [50.591267188664666]
  Hybrid quantum systems in the ultrastrong, and even more in the deep-strong, coupling regimes can exhibit exotic physical phenomena. We experimentally observe the parity symmetry breaking of an ancillary Xmon artificial atom induced by the field of a lumped-element superconducting resonator. This result opens a way to experimentally explore the novel quantum-vacuum effects emerging in the deep-strong coupling regime.
  arXiv  Detail & Related papers  (2022-09-13T06:14:08Z)
• 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)
• Efficient quadrature-squeezing from biexcitonic parametric gain in atomically thin semiconductors [0.0]
  interfacing an atomically thin semiconductor with an optical cavity allows to harness this two-photon resonance and use the biexcitonic parametric gain to generate squeezed light with input power an order of magnitude below current devices. These results identify atomically thin semiconductors as a promising candidate for on-chip squeezed-light sources.
  arXiv  Detail & Related papers  (2022-03-09T08:06:20Z)
• Enhanced Cavity Optomechanics with Quantum-well Exciton Polaritons [0.0]
  microresonators embed quantum wells can host excitonic, optical and mechanical modes at once. We investigate the case where the system operates in the strong exciton-photon coupling regime. We predict an enhancement of polariton-phonon interactions by two orders of magnitude with respect to mere optomechanical coupling.
  arXiv  Detail & Related papers  (2022-02-24T13:26:19Z)
• A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
  We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
  arXiv  Detail & Related papers  (2021-06-21T17:34:02Z)
• Quantum theory of two-dimensional materials coupled to electromagnetic resonators [0.0]
  We present a microscopic quantum theory of light-matter interaction in pristine sheets of two-dimensional semiconductors coupled to localized electromagnetic resonators. The light-matter interaction breaks the translation symmetry of excitons in the two-dimensional lattice, and we find that this symmetry-breaking interaction leads to the formation of a localized exciton state. We quantify the influence of the environment and find that it is most pronounced for small lateral confinement length scales of the electromagnetic field in the resonator.
  arXiv  Detail & Related papers  (2021-03-26T14:25:57Z)
• Directional emission of down-converted photons from a dielectric nano-resonator [55.41644538483948]
  We theoretically describe the generation of photon pairs in the process of spontaneous parametric down-conversion. We reveal that highly directional photon-pair generation can be observed utilising the nonlinear Kerker-type effect.
  arXiv  Detail & Related papers  (2020-11-16T10:30:04Z)
• Parallel dark soliton pair in a bistable 2D exciton-polariton superfluid [47.187609203210705]
  2D dark solitons are unstable and collapse into vortices due to snake instabilities. We demonstrate that a pair of dark solitons can be formed in the wake of an obstacle in a polariton flow resonantly supported by a homogeneous laser beam.
  arXiv  Detail & Related papers  (2020-03-25T13:52:22Z)

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.