Quantum computation of dynamical quantum phase transitions and entanglement tomography in a lattice gauge theory

N Mueller, JA Carolan, A Connelly, Z Davoudi… - PRX Quantum, 2023 - APS
Strongly coupled gauge theories far from equilibrium may exhibit unique features that could
illuminate the physics of the early universe and of hadron and ion colliders. Studying real …

Symmetry-resolved dynamical purification in synthetic quantum matter

V Vitale, A Elben, R Kueng, A Neven, J Carrasco… - SciPost Physics, 2022 - scipost.org
When a quantum system initialized in a product state is subjected to either coherent or
incoherent dynamics, the entropy of any of its connected partitions generically increases as …

Experimental single-setting quantum state tomography

R Stricker, M Meth, L Postler, C Edmunds, C Ferrie… - PRX Quantum, 2022 - APS
Quantum computers solve ever more complex tasks using steadily growing system sizes.
Characterizing these quantum systems is vital, yet becoming increasingly challenging. The …

Optimizing shadow tomography with generalized measurements

HC Nguyen, JL Bönsel, J Steinberg, O Gühne - Physical Review Letters, 2022 - APS
Advances in quantum technology require scalable techniques to efficiently extract
information from a quantum system. Traditional tomography is limited to a handful of qubits …

Lack of symmetry restoration after a quantum quench: an entanglement asymmetry study

F Ares, S Murciano, E Vernier, P Calabrese - SciPost Physics, 2023 - scipost.org
We consider the quantum quench in the XX spin chain starting from a tilted Néel state which
explicitly breaks the $ U (1) $ symmetry of the post-quench Hamiltonian. Very surprisingly …

Charge-resolved entanglement in the presence of topological defects

DX Horváth, S Fraenkel, S Scopa, C Rylands - Physical Review B, 2023 - APS
Topological excitations or defects such as solitons are ubiquitous throughout physics,
supporting numerous interesting phenomena like zero-energy modes with exotic statistics …

Entanglement resolution of free Dirac fermions on a torus

A Foligno, S Murciano, P Calabrese - Journal of High Energy Physics, 2023 - Springer
A bstract Whenever a system possesses a conserved charge, the density matrix splits into
eigenspaces associated to the each symmetry sector and we can access the entanglement …

On the boundary conformal field theory approach to symmetry-resolved entanglement

G Di Giulio, R Meyer, C Northe, H Scheppach… - SciPost Physics …, 2023 - scipost.org
We study the symmetry resolution of the entanglement entropy of an interval in two-
dimensional conformal field theories (CFTs), by relating the bipartition to the geometry of an …

Rényi entanglement asymmetry in ()-dimensional conformal field theories

M Chen, HH Chen - Physical Review D, 2024 - APS
In this paper, we consider the Rényi entanglement asymmetry of excited states in the (1+ 1)
dimensional free compact boson conformal field theory (CFT) at equilibrium. We obtain a …

Reflected entropy and computable cross-norm negativity: Free theories and symmetry resolution

C Berthiere, G Parez - Physical Review D, 2023 - APS
We investigate a separability criterion based on the computable cross-norm (CCNR), and a
related quantity called the CCNR negativity. We introduce a reflected version of the CCNR …