Entanglement spreading in a minimal model of maximal many-body quantum chaos

B Bertini, P Kos, T Prosen - Physical Review X, 2019 - APS
The spreading of entanglement in out-of-equilibrium quantum systems is currently at the
center of intense interdisciplinary research efforts involving communities with interests …

Universal measurement-based quantum computation in a one-dimensional architecture enabled by dual-unitary circuits

DT Stephen, WW Ho, TC Wei, R Raussendorf… - Physical Review Letters, 2024 - APS
A powerful tool emerging from the study of many-body quantum dynamics is that of dual-
unitary circuits, which are unitary even when read “sideways,” ie, along the spatial direction …

Out-of-time-order correlators of nonlocal block-spin and random observables in integrable and nonintegrable spin chains

RK Shukla, A Lakshminarayan, SK Mishra - Physical Review B, 2022 - APS
Out-of-time-order correlators (OTOC) in the Ising Floquet system, which can be both
integrable and nonintegrable, are studied. Instead of localized spin observables, we study …

Characteristic, dynamic, and near-saturation regions of out-of-time-order correlation in Floquet Ising models

RK Shukla, SK Mishra - Physical Review A, 2022 - APS
We study characteristic, dynamic, and saturation regimes of the out-of-time-order correlation
(OTOC) in the constant-field Floquet system with and without longitudinal field. In the …

Violation of Bohigas-Giannoni-Schmit conjecture using an integrable many-body Floquet system

H Sharma, UT Bhosale - arXiv preprint arXiv:2307.14122, 2023 - arxiv.org
Earlier studies have given enough evidence in support of the BGS conjecture, with few
exceptions violating it. Here, we provide one more counterexample using a many-body …

Exactly solvable dynamics and signatures of integrability in an infinite-range many-body Floquet spin system

H Sharma, UT Bhosale - Physical Review B, 2024 - APS
We study N qubits having infinite-range Ising interaction and subjected to a periodic pulse of
an external magnetic field. We analytically solve the cases of N= 5 to 11 qubits, finding its …

Floquet integrability and long-range entanglement generation in the one-dimensional quantum Potts model

AI Lotkov, V Gritsev, AK Fedorov, DV Kurlov - Physical Review B, 2022 - APS
We develop a Floquet protocol for long-range entanglement generation in the one-
dimensional quantum Potts model, which generalizes the transverse-filed Ising model by …

Signatures of quantum integrability and exactly solvable dynamics in an infinite-range many-body Floquet spin system

H Sharma, UT Bhosale - Physical Review B, 2024 - APS
In a recent work [Sharma and Bhosale, Phys. Rev. B 109, 014412 (2024) 2469-9950
10.1103/PhysRevB. 109.014412], an N-spin Floquet model with infinite-range Ising …

Adiabatic preparation of multipartite GHZ states via Rydberg ground-state blockade

DX Li, TY Zheng, XQ Shao - Optics Express, 2019 - opg.optica.org
The multipartite GHZ states are useful resources for quantum information processing. Here
we put forward a scalable way to adiabatically prepare the multipartite GHZ states in a chain …

Growth of genuine multipartite entanglement in random unitary circuits

A Bera, S Singha Roy - Physical Review A, 2020 - APS
We study the growth of genuine multipartite entanglement in random quantum circuit
models, which include random unitary circuit models and the random Clifford circuit. We find …