303 citations · 1.7k across the 34 of their papers we have counts for
35 papers
Preparing a Thermofield Double State with Feedback Quantum Algorithms
Guilherme E. L. Pexe, Lucas A. M. Rattighieri, Felipe F. Fanchini +2
The efficient preparation of correlated thermal states, such as the Thermofield Double (TFD) state, is a fundamental prerequisite for simulating quantum gravity models and many-bod…
Minimal time required to charge a quantum system
Ju-Yeon Gyhm, Dario Rosa, Dominik Šafránek
We introduce a quantum charging distance as the minimal time that it takes to reach one state (charged state) from another state (depleted state) via a unitary evolution, assuming…
Machine learning wave functions to identify fractal phases
Tilen Cadez, Barbara Dietz, Dario Rosa +3
We demonstrate that an image recognition algorithm based on a convolutional neural network provides a powerful procedure to differentiate between ergodic, non-ergodic extended (fra…
Generation of Pseudo-Random Quantum States on Actual Quantum Processors
Gabriele Cenedese, Maria Bondani, Dario Rosa +1
The generation of a large amount of entanglement is a necessary condition for a quantum computer to achieve quantum advantage. In this paper, we propose a method to efficiently gen…
From Dyson Models to Many-Body Quantum Chaos
Alexei Andreanov, Matteo Carrega, Jeff Murugan +3
A deep understanding of the mechanisms underlying many-body quantum chaos is one of the big challenges in contemporary theoretical physics. We tackle this problem in the context of…
Artificial intelligence discovery of a charging protocol in a micromaser quantum battery
Carla Rodríguez, Dario Rosa, Jan Olle
We propose a gradient-based general computational framework for optimizing model-dependent parameters in quantum batteries (QB). We apply this method to two different charging scen…
Lossy Micromaser Battery: Almost Pure States in the Jaynes-Cummings Regime
Vahid Shaghaghi, Varinder Singh, Matteo Carrega +2
We consider a micromaser model of a quantum battery, where the battery is a single mode of the electromagnetic field in a cavity, charged via repeated interactions with a stream of…
Thermodynamic uncertainty relation in nondegenerate and degenerate maser heat engines
Varinder Singh, Vahid Shaghaghi, Özgür E. Müstecaplıoğlu +1
We investigate the thermodynamic uncertainty relation (TUR), \textit{i.e.} a trade-off between entropy production rate and relative power fluctuations, for nondegenerate three-leve…
Entanglement dynamics and classical complexity
Jiaozi Wang, Barbara Dietz, Dario Rosa +1
We study the dynamical generation of entanglement for a two-body interacting system, starting from a separable coherent state. We show analytically that in the quasiclassical regim…
Delayed Thermalization in Mass-Deformed SYK
Dillip Kumar Nandy, Tilen Cadez, Barbara Dietz +2
We study the thermalizing properties of the mass-deformed SYK model, in a regime of parameters where the eigenstates are ergodically extended over just portions of the full Fock sp…
Micromasers as Quantum Batteries
Vahid Shaghaghi, Varinder Singh, Giuliano Benenti +1
We show that a micromaser is an excellent model of quantum battery. A highly excited, pure, and effectively steady state of the cavity mode, charged by coherent qubits, can be achi…
Replica Symmetry Breaking in Random Non-Hermitian Systems
Antonio M. García-García, Yiyang Jia, Dario Rosa +1
Recent studies have revealed intriguing similarities between the contribution of wormholes to the gravitational path integral and the phenomenon of replica symmetry breaking observ…
Replica Symmetry Breaking for the Integrable Two-Site Sachdev-Ye-Kitaev Model
Yiyang Jia, Dario Rosa, Jacobus J. M. Verbaarschot
We analyze a two-body nonhermitian two-site Sachdev-Ye-Kitaev model with the couplings of one site complex conjugated to the other site. This model, with no explicit coupling betwe…
Quantum Chaos and Circuit Parameter Optimization
Joonho Kim, Yaron Oz, Dario Rosa
We explore quantum chaos diagnostics of variational circuit states at random parameters and study their correlation with the circuit expressibility and the optimization of control…
Operator Delocalization in Quantum Networks
Joonho Kim, Jeff Murugan, Jan Olle +1
We investigate the delocalization of operators in non-chaotic quantum systems whose interactions are encoded in an underlying graph or network. In particular, we study how fast ope…
Neural Networks as Universal Probes of Many-Body Localization in Quantum Graphs
Cameron Beetar, Jeff Murugan, Dario Rosa
We show that a neural network, trained on the entanglement spectra of a nearest neighbor Heisenberg chain in a random transverse magnetic field, can be used to efficiently study th…
Quantum Charging Advantage Cannot Be Extensive Without Global Operations
Ju-Yeon Gyhm, Dominik Šafránek, Dario Rosa
Quantum batteries are devices made from quantum states, which store and release energy in a fast and efficient manner, thus offering numerous possibilities in future technological…
Replica Symmetry Breaking and Phase Transitions in a PT Symmetric Sachdev-Ye-Kitaev Model
Antonio M. García-García, Yiyang Jia, Dario Rosa +1
We show that the low temperature phase of a conjugate pair of uncoupled, quantum chaotic, nonhermitian systems such as the Sachdev-Ye-Kitaev (SYK) model or the Ginibre ensemble of…
Sparse Sachdev-Ye-Kitaev model, quantum chaos and gravity duals
Antonio M. García-García, Yiyang Jia, Dario Rosa +1
We study a sparse Sachdev-Ye-Kitaev (SYK) model with Majoranas where only independent matrix elements are non-zero. We identify a minimum for quantum c…
Unveiling operator growth in SYK quench dynamics
Matteo Carrega, Joonho Kim, Dario Rosa
We study non-equilibrium dynamics induced by a sudden quench of strongly correlated Hamiltonians with all-to-all interactions. By relying on a Sachdev-Ye-Kitaev (SYK) based quench…
Ultra-stable charging of fast-scrambling SYK quantum batteries
Dario Rosa, Davide Rossini, Gian Marcello Andolina +2
Collective behavior strongly influences the charging dynamics of quantum batteries (QBs). Here, we study the impact of nonlocal correlations on the energy stored in a system of …
Quantum advantage in the charging process of Sachdev-Ye-Kitaev batteries
Davide Rossini, Gian Marcello Andolina, Dario Rosa +2
The exactly-solvable Sachdev-Ye-Kitaev (SYK) model has recently received considerable attention in both condensed matter and high energy physics because it describes quantum matter…
Quantum chaos transition in a two-site SYK model dual to an eternal traversable wormhole
Antonio M. García-García, Tomoki Nosaka, Dario Rosa +1
It has been recently proposed by Maldacena and Qi that an eternal traversable wormhole in a two dimensional Anti de Sitter space () is the gravity dual of the low temp…
Thouless time for mass-deformed SYK
Tomoki Nosaka, Dario Rosa, Junggi Yoon
We study the onset of RMT dynamics in the mass-deformed SYK model (i.e. an SYK model deformed by a quadratic random interaction) in terms of the strength of the quadratic deformati…