Learning quantum systems

V Gebhart, R Santagati, AA Gentile, EM Gauger… - Nature Reviews …, 2023 - nature.com
The future development of quantum technologies relies on creating and manipulating
quantum systems of increasing complexity, with key applications in computation, simulation …

Entanglement Hamiltonians: from field theory to lattice models and experiments

M Dalmonte, V Eisler, M Falconi… - Annalen der …, 2022 - Wiley Online Library
Results about entanglement (or modular) Hamiltonians of quantum many‐body systems in
field theory and statistical mechanics models, and recent applications in the context of …

Quantum Gravity Emergence from Entanglement in a Multi-Fold Universe

S Maes - 2020 - hal.science
We start from a hypothetical multi-fold universe U_ {MF}}, where the propagation of
everything is slower or equal to the speed of light and where entanglement extends the set …

Quantum variational learning of the entanglement Hamiltonian

C Kokail, B Sundar, TV Zache, A Elben, B Vermersch… - Physical review …, 2021 - APS
Learning the structure of the entanglement Hamiltonian (EH) is central to characterizing
quantum many-body states in analog quantum simulation. We describe a protocol where …

Estimation of Hamiltonian parameters from thermal states

LP García-Pintos, K Bharti, J Bringewatt, H Dehghani… - Physical Review Letters, 2024 - APS
We upper bound and lower bound the optimal precision with which one can estimate an
unknown Hamiltonian parameter via measurements of Gibbs thermal states with a known …

Negativity Hamiltonian: an operator characterization of mixed-state entanglement

S Murciano, V Vitale, M Dalmonte, P Calabrese - Physical Review Letters, 2022 - APS
In the context of ground states of quantum many-body systems, the locality of entanglement
between connected regions of space is directly tied to the locality of the corresponding …

Demonstrating the wormhole mechanism of the entanglement spectrum via a perturbed boundary

Z Liu, RZ Huang, Z Yan, DX Yao - Physical Review B, 2024 - APS
The Li-Haldane conjecture is one of the most famous conjectures in physics and opens a
new research area in the quantum entanglement and topological phase. Although a lot of …

Entanglement Hamiltonian of interacting fermionic models

F Parisen Toldin, FF Assaad - Physical review letters, 2018 - APS
Recent numerical advances in the field of strongly correlated electron systems allow the
calculation of the entanglement spectrum and entropies for interacting fermionic systems. An …

Entanglement Hamiltonian during a domain wall melting in the free Fermi chain

F Rottoli, S Scopa, P Calabrese - Journal of Statistical Mechanics …, 2022 - iopscience.iop.org
We study the unitary time evolution of the entanglement Hamiltonian of a free Fermi lattice
gas in one dimension initially prepared in a domain wall configuration. To this aim, we …

On the continuum limit of the entanglement Hamiltonian

V Eisler, E Tonni, I Peschel - Journal of Statistical Mechanics …, 2019 - iopscience.iop.org
We consider the entanglement Hamiltonian for an interval in a chain of free fermions in its
ground state and show that the lattice expression goes over into the conformal one if one …