Entanglement in many-body systems

L Amico, R Fazio, A Osterloh, V Vedral - Reviews of modern physics, 2008 - APS
Recent interest in aspects common to quantum information and condensed matter has
prompted a flurry of activity at the border of these disciplines that were far distant until a few …

Entanglement in indistinguishable particle systems

F Benatti, R Floreanini, F Franchini, U Marzolino - Physics Reports, 2020 - Elsevier
For systems consisting of distinguishable particles, there exists an agreed upon notion of
entanglement which is fundamentally based on the possibility of addressing individually …

A Lie algebraic theory of barren plateaus for deep parameterized quantum circuits

M Ragone, BN Bakalov, F Sauvage, AF Kemper… - Nature …, 2024 - nature.com
Variational quantum computing schemes train a loss function by sending an initial state
through a parametrized quantum circuit, and measuring the expectation value of some …

A unified theory of barren plateaus for deep parametrized quantum circuits

M Ragone, BN Bakalov, F Sauvage… - arXiv e …, 2023 - ui.adsabs.harvard.edu
Variational quantum computing schemes have received considerable attention due to their
high versatility and potential to make practical use of near-term quantum devices. At their …

[图书][B] Geometry of quantum states: an introduction to quantum entanglement

I Bengtsson, K Życzkowski - 2017 - books.google.com
Quantum information theory is a branch of science at the frontier of physics, mathematics,
and information science, and offers a variety of solutions that are impossible using classical …

Crossed product algebras and generalized entropy for subregions

S Ali Ahmad, R Jefferson - SciPost Physics Core, 2024 - scipost.org
An early result of algebraic quantum field theory is that the algebra of any subregion in a
QFT is a von Neumann factor of type III $ _ {1} $, in which entropy cannot be well-defined …

Simple test for hidden variables in spin-1 systems

AA Klyachko, MA Can, S Binicioğlu, AS Shumovsky - Physical review letters, 2008 - APS
We resolve an old problem about the existence of hidden parameters in a three-dimensional
quantum system by constructing an appropriate Bell's type inequality. This reveals the …

A subsystem-independent generalization of entanglement

H Barnum, E Knill, G Ortiz, R Somma, L Viola - Physical Review Letters, 2004 - APS
We present a generalization of entanglement based on the idea that entanglement is
relative to a distinguished subspace of observables rather than a distinguished subsystem …

Floquet dynamical phase transition and entanglement spectrum

R Jafari, A Akbari - Physical Review A, 2021 - APS
We explore both pure and mixed state Floquet dynamical quantum phase transitions
(FDQFTs) in the one-dimensional p-wave superconductor with a time-driven pairing phase …

Quantum relativity of subsystems

S Ali Ahmad, TD Galley, PA Höhn, MPE Lock… - Physical Review Letters, 2022 - APS
One of the most basic notions in physics is the partitioning of a system into subsystems and
the study of correlations among its parts. In this Letter, we explore this notion in the context of …