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High-resolution coherent probe spectroscopy of a polariton quantum fluid
Ferdinand Claude, Maxime J Jacquet, Romain Usciati +4
Characterising elementary excitations in quantum fluids is essential to study collective effects within. We present an original angle-resolved coherent probe spectroscopy technique…
Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid
Riccardo Cominotti, Anna Berti, Arturo Farolfi +5
We report on the experimental measurement of the dispersion relation of the density and spin collective excitation modes in an elongated two-component superfluid of ultracold boson…
Interplay of Kelvin-Helmholtz and superradiant instabilities of an array of quantized vortices in a two-dimensional Bose--Einstein condensate
Luca Giacomelli, Iacopo Carusotto
We investigate the various physical mechanisms that underlie the dynamical instability of a quantized vortex array at the interface between two counter-propagating superflows in a…
Autonomous stabilization of photonic Laughlin states through angular momentum potentials
Rifat Onur Umucalilar, Jonathan Simon, Iacopo Carusotto
We propose a method to stabilize Laughlin states of a large number of strongly interacting photons by combining a frequency-selective incoherent pump with a step-like potential in…
Spontaneous quantum superradiant emission in atomic Bose-Einstein condensates subject to a synthetic vector potential
Luca Giacomelli, Iacopo Carusotto
We theoretically investigate the spontaneous quantum emission of phonon pairs by superradiant processes in an atomic Bose-Einstein condensate subject to a synthetic vector potentia…
Particle creation in the spin modes of a dynamically oscillating two-component Bose-Einstein condensate
Salvatore Butera, Iacopo Carusotto
We investigate the parametric amplification of the zero-point fluctuations in the spin modes of a two-component Bose-Einstein condensate, triggered by the dynamical evolution of th…