Corpus ID: 236133999

Cavity-mediated electron hopping in disordered quantum Hall systems

  title={Cavity-mediated electron hopping in disordered quantum Hall systems},
  author={Cristiano Ciuti},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  • C. Ciuti
  • Published 2021
  • Physics
  • arXiv: Mesoscale and Nanoscale Physics
We investigate the emergence of long-range electron hopping mediated by cavity vacuum fields in disordered quantum Hall systems. We show that the counter-rotating (anti-resonant) light-matter interaction produces an effective hopping between disordered eigenstates within the last occupied Landau band. The process involves a number of intermediate states equal to the Landau degeneracy: each of these states consists of a virtual cavity photon and an electron excited in the next Landau band with… Expand
Breakdown of the topological protection by cavity vacuum fields in the integer quantum Hall effect
Felice Appugliese, Josefine Enkner, Gian Lorenzo Paravicini-Bagliani, Mattias Beck, Christian Reichl, Werner Wegscheider, Giacomo Scalari, Cristiano Ciuti, and Jérôme Faist ETH Zürich, Institute ofExpand
Polaritonic Hofstadter Butterfly and Cavity-Control of the Quantized Hall Conductance
Vasil Rokaj, 2, ∗ Markus Penz, Michael A. Sentef, Michael Ruggenthaler, and Angel Rubio 4, † Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science,Expand


Cavity quantum electrodynamics with many-body states of a two-dimensional electron gas
It is shown that self-organized electronic states can be controlled and manipulated to unravel the details of the exotic electronic behavior of nonequilibrium quasiparticles with a photonic component. Expand
Cavity-assisted mesoscopic transport of fermions: Coherent and dissipative dynamics
We study the interplay between charge transport and light-matter interactions in a confined geometry, by considering an open, mesoscopic chain of two-orbital systems resonantly coupled to a singleExpand
High-order multipole radiation from quantum Hall states in Dirac materials
Topological states can exhibit electronic coherence on macroscopic length scales. When the coherence length exceeds the wavelength of light, one can expect new phenomena to occur in the opticalExpand
Cavity-Enhanced Transport of Charge.
This work theoretically investigate charge transport through electronic bands of a mesoscopic one-dimensional system, where interband transitions are coupled to a confined cavity mode, initially prepared close to its vacuum and shows that the charge conductivity enhancement can reach orders of magnitudes under experimentally relevant conditions. Expand
Quantized Hall conductance, current carrying edge states, and the existence of extended states in a two-dimensional disordered potential
When a conducting layer is placed in a strong perpendicular magnetic field, there exist current-carrying electron states which are localized within approximately a cyclotron radius of the sampleExpand
Cavity-Mediated Electron-Photon Superconductivity.
It is shown that the structured cavity vacuum can induce long-range attractive interactions between current fluctuations which lead to pairing in generic materials with critical temperatures in the low-kelvin regime for realistic parameters. Expand
Absence of backscattering in the quantum Hall effect in multiprobe conductors.
  • Büttiker
  • Physics, Medicine
  • Physical review. B, Condensed matter
  • 1988
This work considers both ideal contacts without elastic scattering and also disordered contacts, and finds that the quantum Hall effect occurs only if the sample exhibits at least two sets of equilibrated edge states which do not interact via elastic or inelastic scattering. Expand
Polaron Polaritons in the Integer and Fractional Quantum Hall Regimes.
This work performs cavity spectroscopy of a two-dimensional electron system in the strong coupling regime, where polariton resonances carry signatures of strongly correlated quantum Hall phases and demonstrates the modification of polaron dressing that is associated with filling factor dependent electron-exciton interactions. Expand
Nonlinear optics in the fractional quantum Hall regime
Time-resolved four-wave-mixing experiments on a two-dimensional electron system embedded in an optical cavity show enhanced polariton–polariton interactions in the fractional quantum Hall regime, which could facilitate the realization of strongly interacting photonic systems, and suggest that nonlinear optical measurements could provide information about fractional Quantum Hall states that is not accessible through their linear optical response. Expand
Non-adiabatic stripping of a cavity field from electrons in the deep-strong coupling regime
Atomically strong light pulses can drive sub-optical-cycle dynamics. When the Rabi frequency—the rate of energy exchange between light and matter—exceeds the optical carrier frequency, fascinatingExpand