314 citations · 1.7k across the 47 of their papers we have counts for
47 papers
Quantum Synchronization
Parvinder Solanki, Albert Cabot, Fernando Iemini +8
Natural and engineered classical systems are replete with examples of synchronization, understood as the adjustment of rhythms of physical systems. Such synchronization is at the h…
Controlling Waiting Time Statistics in Monitored Collective Spins: Mitigating Detector's Resolution Barrier in Measurement-Induced Phase Transitions
Tanbir Islam, Fernando Iemini
In collective dissipative spin systems, the postselection barrier can be partially mitigated; however, a further obstacle may be posed by the finite temporal resolution of detector…
Quantum Trajectory Entanglement in Seeded Boundary Time Crystals
Mohammad Jafari, Fernando Iemini
We investigate the entanglement dynamics along quantum trajectories during the seeding of time-crystalline order in a boundary time crystal (BTC). Specifically, how entanglement sp…
Optimal observables for quantum-enhanced sensing and applications in a Floquet time crystal sensor
M. A. Manya, Andrei Tsypilnikov, Fernando Iemini
In this work, we discuss how to determine and implement feasible optimal observables for a metrology protocol that saturates the quantum Fisher information (QFI) bound. In particul…
Sensing ac fields with quantum many-body scars
Matheus Fibger, Andrei Tsypilnikov, Thiago R. de Oliveira +1
Quantum many-body scars (MBS) exhibit weak ergodicity breaking and long-lived coherent dynamics within an otherwise thermal spectrum. We investigate their metrological properties u…
BCS-BEC crossover in trapped one-dimensional Fermi-Hubbard chains: entanglement and correlation signatures from DMRG and effective-pairing theory
G. Diniz, I. M. Carvalho, M. Sanino +2
Confined ultracold atoms in optical lattices provide a versatile platform for simulating lattice models of strongly correlated quantum systems, where pairing phenomena and superflu…
Stochastic Quantum Information Geometry and Speed Limits at the Trajectory Level
Pedro B. Melo, Pedro V. Paraguassú, Sílvio M. Duarte Queirós +3
In quantum metrology, precision is typically characterized by an ensemble-averaged quantity, the quantum Fisher information (QFI), which averages over the fluctuations of individua…
Exact analysis of AC sensors based on Floquet time crystals
Andrei Tsypilnikov, Matheus Fibger, Fernando Iemini
We discuss the behavior of general Floquet time crystals (FTCs), including prethermal ones, in closed systems acting as AC sensors. We provide an analytical treatment of their quan…
Thermodynamic interpretation to Stochastic Fisher Information and Single-Trajectory Speed Limits
Pedro B. Melo, Fernando Iemini, Diogo O. Soares-Pinto +2
The Fisher information (FI) metric is a Riemannian metric that allows a geometric treatment of stochastic thermodynamics, introducing the possibility of computing thermodynamic len…
Roadmap on Quantum Thermodynamics
Steve Campbell, Irene D'Amico, Mario A. Ciampini +66
The last two decades has seen quantum thermodynamics become a well established field of research in its own right. In that time, it has demonstrated a remarkably broad applicabilit…
Information scrambling and entanglement dynamics in Floquet Time Crystals
Himanshu Sahu, Fernando Iemini
We study the dynamics of out-of-time-ordered correlators (OTOCs) and entanglement of entropy as quantitative measures of information propagation in disordered many-body systems exh…
Prethermal Floquet time crystals in chiral multiferroic chains and applications as quantum sensors of AC fields
Rohit Kumar Shukla, Levan Chotorlishvili, Sunil K. Mishra +1
We study the emergence of prethermal Floquet Time Crystal (pFTC) in disordered chiral multiferroic chains. The model is an extension of the usual periodically driven nearest-neighb…
Lindbladian reverse engineering for general non-equilibrium steady states: A scalable null-space approach
Leonardo da Silva Souza, Fernando Iemini
The study of open system dynamics is of paramount importance both from its fundamental aspects as well as from its potential applications in quantum technologies. In the simpler an…
Boundary Time Crystals as AC sensors: enhancements and constraints
Dominic Gribben, Anna Sanpera, Rosario Fazio +2
We investigate the use of a boundary time crystals (BTCs) as quantum sensors of AC fields. Boundary time crystals are non-equilibrium phases of matter in contact to an environment,…
Dynamics of inhomogeneous spin ensembles with all-to-all interactions: breaking permutational invariance
Fernando Iemini, Darrick Chang, Jamir Marino
We investigate the consequences of introducing non-uniform initial conditions in the dynamics of spin ensembles characterized by all-to-all interactions. Specifically, our study in…
Floquet time-crystals as sensors of AC fields
Fernando Iemini, Rosario Fazio, Anna Sanpera
The long range spatial and temporal ordering displayed by discrete time crystals, can become advantageous properties when used for sensing extremely weak signals. Here, we investig…
Fermionic anyons: entanglement and quantum computation from a resource-theoretic perspective
Allan Tosta, Antônio C. Lourenço, Daniel Brod +2
Quantum computational models can be approached via the lens of resources needed to perform computational tasks, where a computational advantage is achieved by consuming specific fo…
Sufficient condition for gapless spin-boson Lindbladians, and its connection to dissipative time-crystals
Leonardo da Silva Souza, Luis Fernando dos Prazeres, Fernando Iemini
We discuss a sufficient condition for gapless excitations in the Lindbladian master equation for collective spin-boson systems and permutationally invariant systems. The condition…
Continuous phase transition induced by non-Hermiticity in the quantum contact process model
Wen-Bin He, Jiasen Jin, Fernando Iemini +1
Non-Hermitian quantum system recently have attracted a lots of attentions theoretically and experimentally. However, the results based on the single-particle picture may not apply…
Genuine Multipartite Correlations in a Boundary Time Crystal
Antônio C. Lourenço, Luis Fernando dos Prazeres, Thiago O. Maciel +2
In this work we study genuine multipartite correlations (GMC's) in a boundary time crystal (BTC). Boundary time crystals are nonequilibrium quantum phases of matter in contact to a…
Quantum correlations, entanglement spectrum and coherence of two-particle reduced density matrix in the Extended Hubbard Model
Diego L. B. Ferreira, Thiago O. Maciel, Reinaldo O. Vianna +1
We study the ground state properties of the one-dimensional extended Hubbard model at half-filling from the perspective of its particle reduced density matrix. We focus on the redu…
Collective effects on the performance and stability of quantum heat engines
Leonardo da Silva Souza, Gonzalo Manzano, Rosario Fazio +1
Recent predictions for quantum-mechanical enhancements in the operation of small heat engines have raised renewed interest in their study from both a fundamental perspective and in…
Determination of the critical exponents in dissipative phase transitions: Coherent anomaly approach
Jiasen Jin, Wen-Bin He, Fernando Iemini +4
We propose a generalization of the coherent anomaly method to extract the critical exponents of a phase transition occurring in the steady-state of an open quantum many-body system…
Boundary time crystals in collective -level systems
Luis Fernando dos Prazeres, Leonardo da Silva Souza, Fernando Iemini
Boundary time crystals (BTC's) are non-equilibrium phases of matter occurring in quantum systems in contact to an environment, for which a macroscopic fraction of the many body sys…