Search Results - "Vianna, Reinaldo O."

Entanglement of indistinguishable particles as a probe for quantum phase transitions in the extended Hubbard model by Iemini, Fernando, Maciel, Thiago O., Vianna, Reinaldo O.

“…We investigate the quantum phase transitions of the extended Hubbard model at half-filling with periodic boundary conditions employing the entanglement of…”
Get full text

Quantum Statistical Complexity Measure as a Signaling of Correlation Transitions by Cesário, André T, Ferreira, Diego L B, Debarba, Tiago, Iemini, Fernando, Maciel, Thiago O, Vianna, Reinaldo O

“…We introduce a quantum version for the statistical complexity measure, in the context of quantum information theory, and use it as a signaling function of…”
Get full text

Quantum process tomography with informational incomplete data of two J-coupled heterogeneous spins relaxation in a time window much greater than T1 by Maciel, Thiago O, Vianna, Reinaldo O, Sarthour, Roberto S, Oliveira, Ivan S

“…We reconstruct the time dependent quantum map corresponding to the relaxation process of a two-spin system in liquid-state NMR at room temperature. By means of…”
Get full text

Efficient quantum tomography of two-mode Wigner functions by Botelho, Ludmila A. S., Vianna, Reinaldo O.

“…We introduce an efficient method to reconstruct the Wigner function of many-mode continuous variable systems. It is based on convex optimization with…”
Get full text

Simple and maximally robust processes with no classical common-cause or direct-cause explanation by Nery, Marcello, Quintino, Marco Túlio, Guérin, Philippe Allard, Maciel, Thiago O., Vianna, Reinaldo O.

“…Guided by the intuition of coherent superposition of causal relations, recent works presented quantum processes without classical common-cause and direct-cause…”
Get full text

Quantum process tomography with informational incomplete data of two J -coupled heterogeneous spins relaxation in a time window much greater than T 1 by Maciel, Thiago O, Vianna, Reinaldo O, Sarthour, Roberto S, Oliveira, Ivan S

Get full text

Dynamical matrix for arbitrary quadratic fermionic bath Hamiltonians and non-Markovian dynamics of one and two qubits in an Ising model environment by Iemini, Fernando, da Silva Souza, Leonardo, Debarba, Tiago, Cesário, André T., Maciel, Thiago O., Vianna, Reinaldo O.

“…We obtain the analytical expression for the Kraus decomposition of the quantum map of an environment modeled by an arbitrary quadratic fermionic Hamiltonian…”
Get full text

Quantifying quantum correlations in fermionic systems using witness operators by Iemini, Fernando, Maciel, Thiago O., Debarba, Tiago, Vianna, Reinaldo O.

“…We present a method to quantify quantum correlations in arbitrary systems of indistinguishable fermions using witness operators. The method associates the…”
Get full text

Separable multipartite mixed states: Operational asymptotically necessary and sufficient conditions by BRANDAO, Fernando G. S. L, VIANNA, Reinaldo O

“…We introduce an operational procedure to determine, with arbitrary probability and accuracy, optimal entanglement witnesses for every multipartite entangled…”
Get full text

Witnessed entanglement and the geometric measure of quantum discord by Debarba, Tiago, Maciel, Thiago O., Vianna, Reinaldo O.

Get full text

Quantum process tomography with informational incomplete data of two J-coupled heterogeneous spins relaxation in a time window much greater than T sub(1) by Maciel, Thiago O, Vianna, Reinaldo O, Sarthour, Roberto S, Oliveira, Ivan S

“…We reconstruct the time dependent quantum map corresponding to the relaxation process of a two-spin system in liquid-state NMR at room temperature. By means of…”
Get full text

Computable measures for the entanglement of indistinguishable particles by Iemini, Fernando, Vianna, Reinaldo O.

Get full text

Quantumness of correlations in indistinguishable particles by Iemini, Fernando, Debarba, Tiago, Vianna, Reinaldo O.

Get full text

Quantum correlations, entanglement spectrum and coherence of two-particle reduced density matrix in the Extended Hubbard Model by Ferreira, Diego L. B, Maciel, Thiago O, Vianna, Reinaldo O, Iemini, Fernando

“…Phys. Rev. B 105, 115145 (2022) We study the ground state properties of the one-dimensional extended Hubbard model at half-filling from the perspective of its…”
Get full text

Reply to “Comment on ‘Witnessed entanglement and the geometric measure of quantum discord’ ” by Debarba, Tiago, Maciel, Thiago O., Vianna, Reinaldo O.

Get full text

Viable entanglement detection of unknown mixed states in low dimensions by Maciel, Thiago O., Vianna, Reinaldo O.

Get full text

Distillability of Werner states using entanglement witnesses and robust semidefinite programs by Vianna, Reinaldo O., Doherty, Andrew C.

Get full text

Simple and maximally robust processes with no classical common-cause or direct-cause explanation by Nery, Marcello, Quintino, Marco Túlio, Guérin, Philippe Allard, Maciel, Thiago O, Vianna, Reinaldo O

“…Quantum 5, 538 (2021) Guided by the intuition of coherent superposition of causal relations, recent works presented quantum processes without classical…”
Get full text

Quantumness of Correlations in Fermionic Systems by Debarba, Tiago, Vianna, Reinaldo O, Iemini, Fernando

“…Phys. Rev. A 95, 022325 (2017) We present a new approach for the quantification of quantumness of correlations in fermionic systems. We study the Multipartite…”
Get full text

Efficient Quantum Tomography of Two-Mode Wigner Functions by Botelho, Ludmila A. S, Vianna, Reinaldo O

“…Eur. Phys. J. D 74, 42 (2020) We introduce an efficient method to reconstruct the Wigner function of many-mode continuous variable systems. It is based on…”
Get full text