37 citations · 174 across the 24 of their papers we have counts for
7 papers · 1 filter
(Non-)Traversable Quantum Phase Transitions
Federico Balducci, Paul M. Schindler, Andrea Solfanelli +1
Quantum phase transitions manifest as an abrupt change in the ground state of a many-body system; yet it is an open question whether this sudden change necessarily precludes a cont…
The deep Hilbert space of all-to-all interacting SU(3) atoms: from quantum to classical
Federico Balducci, Aleksandra A. Ziolkowska
We study the emergence of chaos in multilevel atoms with all-to-all interactions, inspired by cavity QED. Focusing on a 3-level Tavis-Cummings model in a far detuned limit, we deta…
Fighting Exponentially Small Gaps by Counterdiabatic Driving
András Grabarits, Federico Balducci, Adolfo del Campo
We investigate the efficiency of approximate counterdiabatic driving (CD) in accelerating adiabatic passage through exponentially small gaps. First, we analyze a minimal spin-glass…
Non-Adiabatic Quantum Optimization for Crossing Quantum Phase Transitions
András Grabarits, Federico Balducci, Barry C. Sanders +1
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 break…
Diagnosing non-Hermitian Many-Body Localization and Quantum Chaos via Singular Value Decomposition
Federico Roccati, Federico Balducci, Ruth Shir +1
Strong local disorder in interacting quantum spin chains can turn delocalized eigenmodes into localized eigenstates, giving rise to many-body localized (MBL) phases. This is accomp…
Large Deviations Beyond the Kibble-Zurek Mechanism
Federico Balducci, Mathieu Beau, Jing Yang +2
The Kibble-Zurek mechanism (KZM) predicts that the average number of topological defects generated upon crossing a continuous or quantum phase transition obeys a universal scaling…
Optimal control of a quantum sensor: A fast algorithm based on an analytic solution
S. Hernández-Gómez, F. Balducci, G. Fasiolo +3
Quantum sensors can show unprecedented sensitivities, provided they are controlled in a very specific, optimal way. Here, we consider a spin sensor of time-varying fields in the pr…