124 citations · 263 across the 15 of their papers we have counts for
15 papers
Competition between pair and single-particle superfluidity in bosonic quasi-flat bands: A Gaussian state approach
Maxime Burgher, Simon Loddo, Laurens Vanderstraeten +2
The interplay between interactions and quantum geometry can drive weakly dispersive bosons into different exotic many-body phases. In this work we study a quasi flat-band model in…
Quantum Simulation with Fluxonium Qutrit Arrays
Ivan Amelio, Quentin Ficheux, Nathan Goldman
Fluxonium superconducting circuits were originally proposed to realize highly coherent qubits. In this work, we explore how these circuits can be used to implement and harness qutr…
Quantum impurities in finite-temperature Bose gases: Detecting vortex proliferation across the BKT and BEC transitions
Paolo Comaron, Nathan Goldman, Atac Imamoglu +1
Detecting vortices in neutral superfluids represents an outstanding experimental challenge. Using stochastic classical-field methods, we theoretically show that a quantum impurity…
First order Quantum Hall to Wigner crystal phase transition on a triangular lattice: an iDMRG study
Gleb Fedorovich, Clemens Kuhlenkamp, Atac Imamoglu +1
In this work we study a system of interacting fermions on a triangular lattice in the presence of an external magnetic field. We neglect spin and fix a density of one third, with o…
Fate of chiral order and impurity self-pinning in flat bands with local symmetry
Maxime Burgher, Marco Di Liberto, Nathan Goldman +1
Interacting bosons on a single plaquette threaded by a -flux can spontaneously break time-reversal symmetry, resulting in a chiral loop current. Connecting such bosonic -flux…
Polaron formation in insulators and the key role of hole scattering processes: Band insulators, charge density waves and Mott transition
Ivan Amelio, Giacomo Mazza, Nathan Goldman
A mobile impurity immersed in a non-interacting Fermi sea is dressed by the gapless particle-hole excitations of the fermionic medium. This conventional Fermi-polaron setting is we…
Chiral polaron formation on the edge of topological quantum matter
Amit Vashisht, Ivan Amelio, Laurens Vanderstraeten +3
Immersing a mobile impurity in a quantum many-body environment can reveal fundamental properties of the background medium, hence providing a powerful probe of quantum matter. This…
Fermionization and collective excitations of 1D polariton lattices
Johannes Knörzer, Rafał Ołdziejewski, Puneet A. Murthy +1
We theoretically demonstrate that the hallmarks of correlation and fermionization in a one-dimensional exciton-polaritons gas can be observed with state-of-the-art technology. Our…
Polaron spectroscopy of interacting Fermi systems: insights from exact diagonalization
Ivan Amelio, Nathan Goldman
Immersing a mobile impurity into a many-body quantum system represents a theoretically intriguing and experimentally effective way of probing its properties.In this work, we study…
Lasing, quantum geometry and coherence in non-Hermitian flat bands
Ivan Amelio, Nathan Goldman
We show that lasing in flat band lattices can be stabilized by means of the geometrical properties of the Bloch states, in settings where the single-particle dispersion is flat in…
Kardar-Parisi-Zhang universality in the linewidth of non-equilibrium 1D quasi-condensates
Ivan Amelio, Alessio Chiocchetta, Iacopo Carusotto
We investigate the finite-size origin of the emission linewidth of a spatially-extended, one-dimensional non-equilibrium condensate. We show that the well-known Schawlow-Townes sca…
Polaron spectroscopy of a bilayer excitonic insulator
Ivan Amelio, Neil Drummond, Eugene Demler +2
Recent advances in fabrication of two dimensional materials and their moiré heterostructures have opened up new avenues for realization of ground-state excitonic insulators, where…
Two-dimensional polaron spectroscopy of Fermi superfluids
Ivan Amelio
Multidimensional spectroscopy is becoming an increasingly popular tool and there is an ongoing effort to access electronic transitions and many-body dynamics in correlated material…
Observation of KPZ universal scaling in a one-dimensional polariton condensate
Quentin Fontaine, Davide Squizzato, Florent Baboux +14
Revealing universal behaviors is a hallmark of statistical physics. Phenomena such as the stochastic growth of crystalline surfaces, of interfaces in bacterial colonies, and spin t…
Dicke coupling by feasible local measurements at the superradiant quantum phase transition
M. Bina, I. Amelio, M. G. A. Paris
We address characterization of many-body superradiant systems and establish a fundamental connection between quantum criticality and the possibility of locally estimating the coupl…