132 citations · 842 across the 30 of their papers we have counts for
18 papers · 1 filter
Many-Body Localization Induced by Correlated Disorder in Interacting Superconducting Qubits
Thiago R. Girão Souza, Andreia Saguia, Alan C. Santos +1
The failure of quantum thermalization due to Many-Body Localization (MBL) has evolved from a theoretical concept in spin chains to an experimental reality in synthetic quantum plat…
Quantum Charging Advantage in Superconducting Solid-State Batteries
Chang-Kang Hu, Chilong Liu, Jingchao Zhao +20
Quantum battery, as a novel energy storage device, offers the potential for unprecedented efficiency and performance beyond the capabilities of classical systems, with broad implic…
Variational simulation of quantum phase transitions induced by boundary fields
Alan Duriez, Andreia Saguia, Marcelo S. Sarandy
The characterization of quantum phase transitions is a fundamental task for the understanding of quantum phases of matter, with a number of potential applications in quantum techno…
Quantum battery supercharging via counter-diabatic dynamics
L. F. C. de Moraes, Alan C. Duriez, A. Saguia +2
We introduce a counter-diabatic approach for deriving Hamiltonians modeling superchargable quantum batteries (QBs). A necessary requirement for the supercharging process is the exi…
Localization effects in disordered quantum batteries
Mohammad B. Arjmandi, Hamidreza Mohammadi, Andreia Saguia +2
We investigate the effect of localization on the local charging of quantum batteries (QBs) modeled by disordered spin systems. Two distinct schemes based on the transverse-field ra…
Localization transition induced by programmable disorder
Jaime L. C. da C. Filho, Zoe Gonzalez Izquierdo, Andreia Saguia +3
We investigate the occurrence of many-body localization (MBL) on a spin-1/2 transverse-field Ising model defined on a Chimera connectivity graph with random exchange interactions a…
Charging power and stability of always-on transitionless driven quantum batteries
Luiz F. C. Moraes, Andreia Saguia, Alan C. Santos +1
The storage and transfer of energy through quantum batteries are key elements in quantum networks. Here, we propose a charger design based on transitionless quantum driving (TQD),…
Stable and charge-switchable quantum batteries
Alan C. Santos, Andreia Saguia, Marcelo S. Sarandy
A fully operational loss-free quantum battery requires an inherent control over the energy transfer process, with the ability of keeping the energy retained with no leakage. Moreov…
Overcoming ambiguities in classical and quantum correlation measures
F. M. Paula, A. Saguia, Thiago R. de Oliveira +1
We identify ambiguities in the available frameworks for defining quantum, classical, and total correlations as measured by discordlike quantifiers. More specifically, we determine…
Observation of environment-induced double sudden transitions in geometric quantum correlations
F. M. Paula, I. A. Silva, J. D. Montealegre +8
Correlations in quantum systems exhibit a rich phenomenology under the effect of various sources of noise. We investigate theoretically and experimentally the dynamics of quantum c…
Geometric classical and total correlations via trace distance
F. M. Paula, J. D. Montealegre, A. Saguia +2
We introduce the concepts of geometric classical and total correlations through Schatten 1-norm (trace norm), which is the only Schatten p-norm able to ensure a well-defined geomet…
One-norm geometric quantum discord under decoherence
J. D. Montealegre, F. M. Paula, A. Saguia +1
Geometric quantum discord is a well-defined measure of quantum correlation if Schatten 1-norm (trace norm) is adopted as a distance measure. Here, we analytically investigate the d…
Nonviolation of Bell's Inequality in Translation Invariant Systems
Thiago R. de Oliveira, A. Saguia, M. S. Sarandy
The nature of quantum correlations in strongly correlated systems has been a subject of intense research. In particular, it has been realized that entanglement and quantum discord…
Witnessing nonclassical multipartite states
A. Saguia, C. C. Rulli, Thiago R. de Oliveira +1
We investigate a witness for nonclassical multipartite states based on their disturbance under local measurements. The witness operator provides a sufficient condition for nonclass…
Nonadditive entropy for random quantum spin-S chains
A. Saguia, M. S. Sarandy
We investigate the scaling of Tsallis entropy in disordered quantum spin-S chains. We show that an extensive scaling occurs for specific values of the entropic index. Those values…
Entanglement Entropy in Random Quantum Spin-S Chains
A. Saguia, M. S. Sarandy, B. Boechat +1
We discuss the scaling of entanglement entropy in the random singlet phase (RSP) of disordered quantum magnetic chains of general spin-S. Through an analysis of the general structu…
Entanglement and Quantum Phases in the Anisotropic Ferromagnetic Heisenberg Chain in the Presence of Domain Walls
F. C. Alcaraz, A. Saguia, M. S. Sarandy
We discuss entanglement in the spin-1/2 anisotropic ferromagnetic Heisenberg chain in the presence of a boundary magnetic field generating domain walls. By increasing the magnetic…
Entanglement in the One-dimensional Kondo Necklace Model
A. Saguia, M. S. Sarandy
We discuss the thermal and magnetic entanglement in the one-dimensional Kondo necklace model. Firstly, we show how the entanglement naturally present at zero temperature is distrib…