163 citations · 3.3k across the 109 of their papers we have counts for
5 papers · 1 filter
Entanglement entropy across the superfluid-insulator transition : a signature of bosonic criticality
Irénée Frérot, Tommaso Roscilde
We study the entanglement entropy and entanglement spectrum of the paradigmatic Bose-Hubbard model, describing strongly correlated bosons on a lattice. The use of a controlled appr…
Multiple Transitions of Coupled Atom-Molecule Bosonic Mixtures in Two Dimensions
Laurent de Forges de Parny, Adam Rançon, Tommaso Roscilde
Motivated by the physics of coherently coupled, ultracold atom-molecule mixtures, we investigate a classical model possessing the same symmetry -- namely a $U(1)\times \mathbb{Z}_2…
Quantum variance: a measure of quantum coherence and quantum correlations for many-body systems
Irénée Frérot, Tommaso Roscilde
Quantum coherence is a fundamental common trait of quantum phenomena, from the interference of matter waves to quantum degeneracy of identical particles. Despite its importance, es…
Area law and its violation: A microscopic inspection into the structure of entanglement and fluctuations
Irénée Frérot, Tommaso Roscilde
Quantum fluctuations of local quantities can be a direct signature of entanglement in an extended quantum many-body system. Hence they may serve as a theoretical (as well as an exp…
Momentum-space correlations of a one-dimensional Bose gas
Bess Fang, Aisling Johnson, Tommaso Roscilde +1
Analyzing the noise in the momentum profiles of single realizations of one-dimensional Bose gases, we present the experimental measurement of the full momentum-space density correl…