148 citations · 598 across the 28 of their papers we have counts for
28 papers
Spectral analysis of equilibration: information leakage in isolated quantum systems
André T. Cesário, Marcos G. Alpino, Reinaldo O. Vianna +1
We develop a unified dynamical-spectral framework for equilibration in isolated quantum systems based on a subspace coarse-graining approach. Central to our formulation is the Leak…
When Isolated Quantum Systems Appear Classical
Thiago R. de Oliveira, Pedro S. Correia, Tiago Debarba +3
The emergence of classical behavior and the origin of thermal equilibrium are two central problems in the foundations of physics. In the standard accounts, both phenomena are typic…
Thermodynamic Constraints on the Emergence of Intersubjectivity in Quantum Systems
Alessandro Candeloro, Tiago Debarba, Felix C. Binder
Ideal quantum measurement requires divergent thermodynamic resources. This is a consequence of the third law of thermodynamics, which prohibits the preparation of the measurement p…
A Complexity-Based Approach to Quantum Observable Equilibration
Marcos G. Alpino, Tiago Debarba, Reinaldo O. Vianna +1
We investigate the role of a statistical complexity measure to assign equilibration in isolated quantum systems. While unitary dynamics preserve global purity, expectation values o…
Thermodynamic Constraints on Information Transmission in Quantum Ensembles
André T. Cesário, Tiago Debarba
The processing of quantum information is limited by fundamental physical constraints on how information can be encoded, transmitted, and extracted. In particular, the non-orthogona…
Emergence of a second law of thermodynamics in isolated quantum systems
Florian Meier, Tom Rivlin, Tiago Debarba +3
The second law of thermodynamics states that the entropy of an isolated system can only increase over time. This appears to conflict with the reversible evolution of isolated quant…
Unknown measurement statistics cannot be redundantly copied using finite resources
Tiago Debarba, Marcus Huber, Nicolai Friis
Measurements can be viewed as interactions between a measured system and a pointer system that imprint information about the system on the pointer. For so-called unbiased interacti…
Quantum Coding with Finite Thermodynamic Resources
Jake Xuereb, Tiago Debarba, Marcus Huber +1
Quantum direct coding or Schumacher compression generalised the ideas of Shannon theory, gave an operational meaning to the von Neumann entropy and established the term qubit. But…
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…
Landauer vs. Nernst: What is the True Cost of Cooling a Quantum System?
Philip Taranto, Faraj Bakhshinezhad, Andreas Bluhm +9
Thermodynamics connects our knowledge of the world to our capability to manipulate and thus to control it. This crucial role of control is exemplified by the third law of thermodyn…
Quantum Statistical Complexity Measure as a Signalling of Correlation Transitions
André T. Cesário, Diego L. B. Ferreira, Tiago Debarba +3
We introduce a quantum version for the statistical complexity measure, in the context of quantum information theory, and use it as a signalling function of quantum order-disorder t…
Teleporting quantum information encoded in fermionic modes
Tiago Debarba, Fernando Iemini, Geza Giedke +1
Quantum teleportation is considered a basic primitive in many quantum information processing tasks and has been experimentally confirmed in various photonic and matter-based setups…
Genuine Multipartite Correlations Distribution in the Criticality of Lipkin-Meshkov-Glick Model
Antônio C. Lourenço, Susane Calegari, Thiago O. Maciel +3
Correlations play a key role in critical phenomena. Quantities such as the entanglement entropy, for instance, provide key insights into the mechanisms underlying quantum criticali…
Entanglement of indistinguishable particles: a comparative study
Antônio C. Lourenço, Tiago Debarba, Eduardo I. Duzzioni
There is a debate in course about the quantification of entanglement of indistinguishable particles and recently a new method due to Lo Franco and Compagno (LFC) [Sci. Rep. \textbf…
Work estimation and work fluctuations in the presence of non-ideal measurements
Tiago Debarba, Gonzalo Manzano, Yelena Guryanova +2
From the perspective of quantum thermodynamics, realisable measurements cost work and result in measurement devices that are not perfectly correlated with the measured systems. We…
Completely Positive Maps for Reduced States of Indistinguishable Particles
Leonardo da Silva Souza, Tiago Debarba, Diego L. Braga Ferreira +2
We introduce a framework for the construction of completely positive maps for subsystems of indistinguishable fermionic particles. In this scenario, the initial global state is alw…
Role of Quantumness of Correlations in Entanglement Resource Theory
Tiago Debarba
Quantum correlations: entanglement and quantumness of correlations are main resource for quantum information theory. In this chapter it is presented the scenarios which quantumness…
Koashi-Winter relation for α-Renyi entropies
Tiago Debarba
This work presents a generalization of the Koashi-Winter relation for -Renyi entropies. This result is based on the Renyi\apos s entropy version of quantum Jensen Shannon diverg…
Non-Markovianity Quantifier of an Arbitrary Quantum Process
Tiago Debarba, Felipe F. Fanchini
Calculating the degree of non-Markovianity of a dissipative process is a difficult task, even for the dynamics of a single qubit, given the complex maximization problem. In this wo…
Quantumness of Correlations in Fermionic Systems
Tiago Debarba, Reinaldo O. Vianna, Fernando Iemini
We present a new approach for the quantification of quantumness of correlations in fermionic systems. We study the Multipartite Relative Entropy of Quantumness in such systems, and…
Quantum Correlations and Coherence in Spin-1 Heisenberg Chains
A. L. Malvezzi, G. Karpat, B. Çakmak +3
We explore quantum and classical correlations along with coherence in the ground states of spin-1 Heisenberg chains, namely the one-dimensional XXZ model and the one-dimensional bi…
Dynamical matrix for arbitrary quadratic fermionic bath Hamiltonians and non-Markovian dynamics of one and two qubits in an Ising model environment
Fernando Iemini, Leonardo da Silva Souza, Tiago Debarba +3
We obtain the analytical expression for the Kraus decomposition of the quantum map of an environment modeled by an arbitrary quadratic fermionic Hamiltonian acting on one or two qu…
Quantumness of correlations in indistinguishable particles
Fernando Iemini, Tiago Debarba, Reinaldo O. Vianna
We discuss a general notion of quantum correlations in fermionic or bosonic indistinguishable particles. Our approach is mainly based on the identification of the algebra of single…
Reply to "Comment on 'Witnessed entanglement and the geometric measure of quantum discord' "
Tiago Debarba, Thiago O. Maciel, Reinaldo O. Vianna
We show that the mistakes pointed out by Rana and Parashar [Phys. Rev. A 87, 016301 (2013)] do not invalidate the main conclusion of our work [Phys. Rev. A 86, 024302 (2012)]. We s…