10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade de São PauloBR795 papers
- Universidade Federal do Rio de JaneiroBR793 papers
- Boston UniversityUS774 papers
- Brookhaven National LaboratoryUS774 papers
- Ludwig-Maximilians-Universität MünchenDE774 papers
- Queen Mary University of LondonGB774 papers
- The University of Texas at ArlingtonUS774 papers
- University of GenevaCH774 papers
- University of OklahomaUS774 papers
- University of OxfordGB774 papers
- University of Science and Technology of ChinaCN774 papers
- AGH University of KrakowPL773 papers
15 papers · 1 filter
Complementary Resource Relation of Concurrence and Roughness for atwo Qubits State
Mauricio Reis, Adélcio C. Oliveira
Quantum resources lie at the core of quantum computation as they are responsible for the computational advantage in many tasks. The complementary relations are a pathway to underst…
Quantum Noise and its Importance to the Quantum Classical Transition Problem: Energy Measurement Aspects
Adélcio C. Oliveira, Z. T. Oliveira Junior, N. S. Correia
In the present contribution we discuss the role of experimental limitations in the classical limit problem. We studied some simple models and found that Quantum Mechanics does not…
Transport in boundary-driven quantum spin systems: One-way street for the energy current
Deborah Oliveira, Emmanuel Pereira, Humberto C. F. Lemos
We study transport properties in boundary-driven asymmetric quantum spin chains given by and Heisenberg models. Our approach exploits symmetry transfo…
One-way street for the energy current: A ubiquitous phenomenon in boundary-driven quantum spin chains
Deborah Oliveira, Emmanuel Pereira, Humberto C F Lemos
Focusing on the description of nontrivial properties of the energy transport at quantum scale, we investigate asymmetrical quantum spin chains described by boundary-driven $\mathit…
Graph Approach to Extended Contextuality
Barbara Amaral, Cristhiano Duarte
Exploring the graph approach, we restate the extended definition of noncontextuality provided by the contextuality-by-default framework. This extended definition avoids the assumpt…
Concentration phenomena in the geometry of Bell correlations
Cristhiano Duarte, Samuraí Brito, Barbara Amaral +1
Bell's theorem shows that local measurements on entangled states give rise to correlations incompatible with local hidden variable models. The degree of quantum nonlocality is not…
Roughness as Classicality Indicator of a Quantum State
Humberto C. F. Lemos, Alexandre C. L. Almeida, Barbara Amaral +1
We define a new quantifier of classicality for a quantum state, the Roughness, which is given by the distance between Wigner and Husimi functions. We show th…
Resource theory of contextuality for arbitrary prepare-and-measure experiments
Cristhiano Duarte, Barbara Amaral
Contextuality has been identified as a potential resource responsible for the quantum advantage in several tasks. It is then necessary to develop a resource-theoretic framework for…
Necessary Conditions for Extended Noncontextuality in General Sets of Random Variables
Barbara Amaral, Cristhiano Duarte, Roberto I. Oliveira
We explore the graph approach to contextuality to restate the extended definition of noncontextuality as given by J. Kujala et. al. [Phys. Rev. Lett. 115, 150401 (2015)] using grap…
Quantifying Bell non-locality with the trace distance
S. G. A. Brito, B. Amaral, R. Chaves
Measurements performed on distant parts of an entangled quantum state can generate correlations incompatible with classical theories respecting the assumption of local causality. T…
Noncontextual wirings
Barbara Amaral, Adán Cabello, Marcelo Terra Cunha +1
Contextuality is a fundamental feature of quantum theory and is necessary for quantum computation and communication. Serious steps have therefore been taken towards a formal framew…
Convergence radius of perturbative Lindblad driven non-equilibrium steady states
Humberto C. F. Lemos, Tomaž Prosen
We address the problem of analyzing the radius of convergence of perturbative expansion of non-equilibrium steady states of Lindblad driven spin chains. A simple formal approach is…
Entanglement preservation on two coupled cavities
R. Rossi
The dynamics of two coupled modes sharing one excitation is considered. A scheme to inhibit the evolution of any initial state in subspace is pr…
Semiclassical Dynamics from Zeno-Like measurements
R. Rossi, K. M. Fonseca, Romero M. C. Nemes
The usual semiclassical approximation for atom-field dynamics consists in substituting the field operators by complex numbers related to the (supposedly large enough) intensity of…
Effectively irreversible fringe contrast attenuation induced by one degree of freedom
A. R. Bosco de Magalhães, Adélcio C. Oliveira
The attenuation of fringe contrast in a Ramsey interferometer induced by the atom-field interaction is analyzed. We show that short-time power series expansion is not the proper to…