Geometric speed limit of accessible many-body state preparation

M Bukov, D Sels, A Polkovnikov - Physical Review X, 2019 - APS
We analyze state preparation within a restricted space of local control parameters between
adiabatically connected states of control Hamiltonians. We formulate a conjecture that the …

Scrambling and recovery of quantum information in inhomogeneous quenches in two-dimensional conformal field theories

K Goto, M Nozaki, S Ryu, K Tamaoka, MT Tan - Physical Review Research, 2024 - APS
We study various quantum quench processes induced by the Möbius/sine-square
deformation of the Hamiltonian in two-dimensional conformal field theories starting from the …

Domain wall melting in the spin- XXZ spin chain: Emergent Luttinger liquid with a fractal quasiparticle charge

M Collura, A De Luca, P Calabrese, J Dubail - Physical Review B, 2020 - APS
In spin chains with local unitary evolution preserving the magnetization S z, the domain-wall
state⋯↑↑↑↑↑↓↓↓↓↓⋯ typically “melts.” At large times, a nontrivial magnetization …

Sonic horizons and causality in phase transition dynamics

D Sadhukhan, A Sinha, A Francuz, J Stefaniak… - Physical Review B, 2020 - APS
A system gradually driven through a symmetry-breaking phase transition is subject to the
Kibble-Zurek mechanism (KZM). As a consequence of the critical slowing down, its state …

Sampling diverse near-optimal solutions via algorithmic quantum annealing

M Mohseni, MM Rams, SV Isakov, D Eppens… - Physical Review E, 2023 - APS
Sampling a diverse set of high-quality solutions for hard optimization problems is of great
practical relevance in many scientific disciplines and applications, such as artificial …

Inhomogeneous quenches as state preparation in two-dimensional conformal field theories

M Nozaki, K Tamaoka, MT Tan - Physical Review D, 2024 - APS
The nonequilibrium process where the system does not evolve to the featureless state, that
without quantum properties, is one of the new central objects in the nonequilibrium …

Spatial deformation of many-body quantum chaotic systems and quantum information scrambling

K Goto, T Guo, T Nosaka, M Nozaki, S Ryu, K Tamaoka - Physical Review B, 2024 - APS
We numerically study the effect of spatial inhomogeneity on quantum information
scrambling, a process of spreading and locally hiding quantum information in quantum …

Inhomogeneous adiabatic preparation of a quantum critical ground state in two dimensions

I Sokolov, FA Bayocboc Jr, MM Rams, J Dziarmaga - Physical Review B, 2024 - APS
Adiabatic preparation of a critical ground state is hampered by the closing of its energy gap
as the system size increases. However, this gap is directly relevant only for a uniform ramp …

Entanglement dynamics of the non-unitary holographic channel

K Goto, M Nozaki, K Tamaoka, MT Tan - Journal of High Energy Physics, 2023 - Springer
A bstract We study the dynamical properties of a strongly scrambling quantum circuit
involving a projective measurement on a finite-sized region by studying the operator …

Hawking radiation on the lattice from Floquet and local Hamiltonian quench dynamics

D Maertens, N Bultinck, K Van Acoleyen - Physical Review B, 2024 - APS
We construct two free fermion lattice models exhibiting Hawking pair creation. Specifically,
we consider the simplest case of ad= 1+ 1 massless Dirac fermion, for which the Hawking …