135 citations · 415 across the 18 of their papers we have counts for
6 papers · 1 filter
Electron-Mediated Phonon Polaritons in Quantum Cavities
Mattia Udina, David Hagenmüller, Indranil Paul
Phonon-photon coupling in quantum materials is commonly treated as an effective direct interaction, neglecting the crucial role played by electrons. Here we develop a gauge-invaria…
THz-induced phonomagnetism in diamagnetic quantum paraelectric KTaO
C. Kadlec, F. Kadlec, D. Repček +13
The current efforts striving to develop new ways of data manipulation are aimed at ultrafast control of magnetization in magnetic materials, as well as at inducing magnetic moments…
Measuring momentum-resolved dissipation of phonon-polaritons in LiNbO with terahertz driving
Megan F. Biggs, Rossella Acampora, Niccolò Sellati +5
Mapping the dispersion of polaritons, hybrid quasiparticles arising from light-matter coupling, can provide key insights into the material dielectric response, coupling strength, a…
Anharmonic phonon coupling enabled by local inversion symmetry breaking at domain walls in ferroelastics
Seyyed Jabbar Mousavi, Vivek Unikandanunni, Niccolo Sellati +7
In ferroelastic materials, spontaneous symmetry breaking leads to the formation of twin domains. Although the bulk crystal typically remains centrosymmetric, inversion symmetry can…
Phonon-Polaritons in Non-Centrosymmetric Systems: Theory of Terahertz Pump-Optical Probe Spectroscopy
Niccolò Sellati, Jacopo Fiore, Stefano Paolo Villani +2
Hybrid lattice-light modes, known as phonon-polaritons, represent the backbone of advanced protocols based on THz pumping of infrared modes. Here we provide a theoretical framework…
Terahertz ionic Kerr effect: Two-phonon contribution to the nonlinear optical response in insulators
Martina Basini, Mattia Udina, Matteo Pancaldi +3
The THz Kerr effect measures the birefringence induced in an otherwise isotropic material by a strong THz pulse driving the Raman-active excitations of the systems. Here we provide…