238 citations · 1.8k across the 28 of their papers we have counts for
12 papers · 1 filter
Cornering the universal shape of fluctuations
Benoit Estienne, Jean-Marie Stéphan, William Witczak-Krempa
Understanding the fluctuations of observables is one of the main goals in science, be it theoretical or experimental, quantum or classical. We investigate such fluctuations when on…
Entanglement spectroscopy of chiral edge modes in the Quantum Hall effect
Benoit Estienne, Jean-Marie Stéphan
We investigate the entanglement entropy in the Integer Quantum Hall effect in the presence of an edge, performing an exact calculation directly from the microscopic two-dimensional…
Emergence of curved light-cones in a class of inhomogeneous Luttinger liquids
Jérôme Dubail, Jean-Marie Stéphan, Pasquale Calabrese
The light-cone spreading of entanglement and correlation is a fundamental and ubiquitous feature of homogeneous extended quantum systems. Here we point out that a class of inhomoge…
Full counting statistics in the Haldane-Shastry chain
Jean-Marie Stéphan, Frank Pollmann
We present analytical and numerical results regarding the magnetization full counting statistics (FCS) of a subsystem in the ground-state of the Haldane-Shastry chain. Exact Pfaffi…
Conformal Field Theory for Inhomogeneous One-dimensional Quantum Systems: the Example of Non-Interacting Fermi Gases
Jérôme Dubail, Jean-Marie Stéphan, Jacopo Viti +1
Conformal field theory (CFT) has been extremely successful in describing large-scale universal effects in one-dimensional (1D) systems at quantum critical points. Unfortunately, it…
Overlap distributions for quantum quenches in the anisotropic Heisenberg chain
Paolo P. Mazza, Jean-Marie Stéphan, Elena Canovi +3
The dynamics after a quantum quench is determined by the weights of the initial state in the eigenspectrum of the final Hamiltonian, i.e., by the distribution of overlaps in the en…
A Rényi entropy perspective on topological order in classical toric code models
Johannes Helmes, Jean-Marie Stéphan, Simon Trebst
Concepts of information theory are increasingly used to characterize collective phenomena in condensed matter systems, such as the use of entanglement entropies to identify emergen…
Entanglement in gapless resonating valence bond states
Jean-Marie Stéphan, Hyejin Ju, Paul Fendley +1
We study resonating-valence-bond (RVB) states on the square lattice of spins and of dimers, as well as SU(N)-invariant states that interpolate between the two. These states are gro…
Phase transition in the Rényi-Shannon entropy of Luttinger liquids
Jean-Marie Stéphan, Grégoire Misguich, Vincent Pasquier
The Rényi-Shannon entropy associated to critical quantum spins chain with central charge is shown to have a phase transition at some value of the Rényi parameter wh…
Universal behavior of a bipartite fidelity at quantum criticality
Jérôme Dubail, Jean-Marie Stéphan
We introduce the (logarithmic) bipartite fidelity of a quantum system as the (logarithm of the) overlap between its ground-state wave function and the ground-state one wo…
Rényi entropy of a line in two-dimensional Ising models
Jean-Marie Stéphan, Grégoire Misguich, Vincent Pasquier
We consider the two-dimensional (2d) Ising model on a infinitely long cylinder and study the probabilities to observe a given spin configuration along a circular section…
Shannon and entanglement entropies of one- and two-dimensional critical wave functions
Jean-Marie Stéphan, Shunsuke Furukawa, Grégoire Misguich +1
We study the Shannon entropy of the probability distribution resulting from the ground-state wave function of a one-dimensional quantum model. This entropy is related to the entang…