Zobrazeno 1 - 10
of 492
pro vyhledávání: '"del Campo, Adolfo"'
We investigate the efficiency of approximate counterdiabatic driving (CD) in accelerating adiabatic passage through a first-order quantum phase transition. Specifically, we analyze a minimal spin-glass bottleneck model that is analytically tractable
Externí odkaz:
http://arxiv.org/abs/2410.02520
We introduce a quantum algorithm integrating counterdiabatic (CD) protocols with quantum Lyapunov control (QLC) to tackle combinatorial optimization problems. This approach offers versatility, allowing implementation as either a digital-analog or pur
Externí odkaz:
http://arxiv.org/abs/2409.12525
Autor:
Takahashi, Kazutaka, del Campo, Adolfo
Krylov subspace methods in quantum dynamics identify the minimal subspace in which a process unfolds. To date, their use is restricted to time evolutions governed by time-independent generators. We introduce a generalization valid for driven quantum
Externí odkaz:
http://arxiv.org/abs/2408.08383
We explore the near adiabatic dynamics in a non-Hermitian quantum many-body system by investigating a finite-time ramp of the imaginary vector potential in the interacting Hatano-Nelson model. The excess energy, the Loschmidt echo, and the density im
Externí odkaz:
http://arxiv.org/abs/2408.07122
We consider the optimal driving of the ground state of a many-body quantum system across a quantum phase transition in finite time. In this context, excitations caused by the breakdown of adiabaticity can be minimized by adjusting the schedule of the
Externí odkaz:
http://arxiv.org/abs/2407.09596
The spin-vector Monte Carlo model is widely used as a benchmark for the classicality of quantum annealers but severely restricts the time evolution. The spin-vector Langevin (SVL) model has been proposed and tested as an alternative, closely reproduc
Externí odkaz:
http://arxiv.org/abs/2407.09316
We study the quantum dynamics generated by a non-Hermitian Hamiltonian subject to stochastic perturbations in its anti-Hermitian part, describing fluctuating gains and losses. The master equation governing the noise-average dynamics describes a new f
Externí odkaz:
http://arxiv.org/abs/2407.07746
Using holography, we study the universal scaling laws governing the coarsening dynamics of strongly coupled domain walls. Specifically, we studied the universal dependence of the length of the domain wall interfaces on the quench rate. The relation s
Externí odkaz:
http://arxiv.org/abs/2406.05167
The superfluid phase transition dynamics and associated spontaneous vortex formation with the crossing of the critical temperature in a disk geometry is studied in the framework of the $AdS/CFT$ correspondence by solving the Einstein-Abelian-Higgs mo
Externí odkaz:
http://arxiv.org/abs/2406.09433
Autor:
Grabarits, András, Swain, Kasturi Ranjan, Heydari, Mahsa Seyed, Chandarana, Pranav, Gómez-Ruiz, Fernando J., del Campo, Adolfo
We report a systematic investigation of universal quantum chaotic signatures in the transverse field Ising model on an Erd\H{o}s-R\'enyi network. This is achieved by studying local spectral measures such as the level spacing and the level velocity st
Externí odkaz:
http://arxiv.org/abs/2405.14376