Quantum entanglement in condensed matter systems

N Laflorencie - Physics Reports, 2016 - Elsevier
This review focuses on the field of quantum entanglement applied to condensed matter
physics systems with strong correlations, a domain which has rapidly grown over the last …

Variational quantum state eigensolver

M Cerezo, K Sharma, A Arrasmith, PJ Coles - npj Quantum Information, 2022 - nature.com
Extracting eigenvalues and eigenvectors of exponentially large matrices will be an important
application of near-term quantum computers. The variational quantum eigensolver (VQE) …

How universal is the entanglement spectrum?

A Chandran, V Khemani, SL Sondhi - Physical review letters, 2014 - APS
It is now commonly believed that the ground state entanglement spectrum (ES) exhibits
universal features characteristic of a given phase. In this Letter, we show that this belief is …

Dynamics of entanglement entropy and entanglement spectrum crossing a quantum phase transition

E Canovi, E Ercolessi, P Naldesi, L Taddia, D Vodola - Physical Review B, 2014 - APS
We study the time evolution of entanglement entropy and entanglement spectrum in a finite-
size system which crosses a quantum phase transition at different speeds. We focus on the …

Majorana wave-function oscillations, fermion parity switches, and disorder in Kitaev chains

SS Hegde, S Vishveshwara - Physical Review B, 2016 - APS
We study the decay and oscillations of Majorana fermion wave functions and ground-state
(GS) fermion parity in one-dimensional topological superconducting lattice systems. Using a …

Long-range entanglement and topological excitations

G Torre, J Odavić, P Fromholz, SM Giampaolo… - SciPost Physics …, 2024 - scipost.org
Topological order comes in different forms, and its classification and detection is an
important field of modern research. In this work, we show that the Disconnected …

Unifying approach to the quantification of bipartite correlations by Bures distance

TR Bromley, M Cianciaruso, RL Franco… - Journal of Physics A …, 2014 - iopscience.iop.org
The notion of distance defined on the set of states of a composite quantum system can be
used to quantify total, quantum and classical correlations in a unifying way. We provide new …

Real-space circuit complexity as a probe of phase diagrams

NC Jayarama, V Svensson - Physical Review B, 2023 - APS
Circuit complexity has been used as a tool to study various properties in condensed matter
systems, in particular as a way to probe the phase diagram. However, compared with …

Genuine multipartite entanglement in the model

SM Giampaolo, BC Hiesmayr - Physical Review A—Atomic, Molecular, and …, 2013 - APS
We analyze the XY model characterized by an anisotropy γ in an external magnetic field, h,
with respect to its genuine multipartite entanglement content (in the thermodynamic and …

Dynamics of the entanglement spectrum in spin chains

G Torlai, L Tagliacozzo… - Journal of Statistical …, 2014 - iopscience.iop.org
We study the dynamics of the entanglement spectrum, that is the time evolution of the
eigenvalues of the reduced density matrices after a bipartition of a one-dimensional spin …