31 citations · 97 across the 10 of their papers we have counts for
10 papers
Absence of a Superradiant Phase Transition in Dirac Landau Polaritons
Elsa Jöchl, Felix Helmrich, Frieder Lindel +6
One of the most striking predictions in cavity quantum electrodynamics is the condensation of photons into a macroscopically populated ground state, the so-called superradiant phas…
Fluctuation engineering in cavity quantum materials
Hope M Bretscher, Lorenzo Graziotto, Marios H Michael +14
Coupling tailored electromagnetic fluctuations to materials provides a resource for controlling correlated quantum matter. By structuring the frequency, spatial, and modal distribu…
Casimir Stabilization of Fluctuating Electronic Nematic Order
Ola Carlsson, Sambuddha Chattopadhyay, Jonathan B. Curtis +4
Vacuum cavity control of quantum materials is the engineering of quantum materials systems through electromagnetic zero-point fluctuations. In this work we articulate a generic mec…
Cavity QED Control of Quantum Hall Stripes
Lorenzo Graziotto, Josefine Enkner, Sambuddha Chattopadhyay +7
Controlling quantum phases of materials with vacuum field fluctuations in engineered cavities is a novel route towards the optical control of emergent phenomena. We demonstrate, us…
Enhanced fractional quantum Hall gaps in a two-dimensional electron gas coupled to a hovering split-ring resonator
Josefine Enkner, Lorenzo Graziotto, Dalin Boriçi +7
The magnetotransport of a high-mobility two-dimensional electron gas coupled to a hovering split-ring resonator with controllable distance is studied in the quantum Hall regime. Th…
Testing the Renormalization of the von Klitzing Constant by Cavity Vacuum Fields
Josefine Enkner, Lorenzo Graziotto, Felice Appugliese +7
In light of recent developments demonstrating the impact of cavity vacuum fields inducing the breakdown of topological protection in the integer quantum Hall effect, a compelling q…
Theory of infrared double-resonance Raman spectrum in graphene: the role of the zone-boundary electron-phonon enhancement
Lorenzo Graziotto, Francesco Macheda, Thibault Sohier +2
We theoretically investigate the double-resonance Raman spectrum of monolayer graphene down to infrared laser excitation energies. By using first-principles density functional theo…
Infrared resonance Raman of bilayer graphene: signatures of massive fermions and band structure on the 2D peak
Lorenzo Graziotto, Francesco Macheda, Tommaso Venanzi +14
Few-layer graphene possesses low-energy carriers which behave as massive fermions, exhibiting intriguing properties in both transport and light scattering experiments. Lowering the…
Terahertz chiral sub-wavelength cavities breaking time-reversal symmetry via ultra-strong light-matter interaction
Johan Andberger, Lorenzo Graziotto, Luca Sacchi +3
We demonstrate terahertz chiral sub-wavelength cavities that break time-reversal symmetry by coupling the degenerate linearly polarized modes of two orthogonal sets of nano-antenna…
Probing enhanced electron-phonon coupling in graphene by infrared resonance Raman spectroscopy
Tommaso Venanzi, Lorenzo Graziotto, Francesco Macheda +16
We report on resonance Raman spectroscopy measurements with excitation photon energy down to 1.16 eV on graphene, to study how low-energy carriers interact with lattice vibrations.…