666 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal do Rio de JaneiroBR289 papers
- Universidade de São PauloBR215 papers
- Centro Brasileiro de Pesquisas FísicasBR188 papers
- Centre National de la Recherche ScientifiqueFR165 papers
- Universidade Estadual de Campinas (UNICAMP)BR156 papers
- Universidade Federal do ABCBR123 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT103 papers
- Radboud University NijmegenNL103 papers
- Universidad Nacional Autónoma de MéxicoMX101 papers
- Universidade do Estado do Rio de JaneiroBR98 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR94 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR94 papers
7 papers · 2 filters
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 and local extremes at an infinite-order quantum phase transition
C. C. Rulli, M. S. Sarandy
The characterization of an infinite-order quantum phase transition (QPT) by entanglement measures is analyzed. To this aim, we consider two closely related solvable spin-1/2 chains…
Bell-like inequality for spin-orbit separability of a classical laser beam
C. V. S. Borges, M. Hor-Meyll, J. A. O. Huguenin +1
In analogy with Bell's inequality for two-qubit quantum states we propose an inequality criterion for the non-separability of the spin-orbit degrees of freedom of a classical laser…
Environment-induced entanglement with a single photon
Malena Hor-Meyll, Adriana Auyuanet, Carolina Borges +4
We propose an all-optical setup, which couples different degrees of freedom of a single photon, to investigate entanglement generation by a common environment. The two qubits are r…
Contribution of adiabatic phases to noncyclic evolution
M. T. Thomaz, A. C. Aguiar Pinto, M. Moutinho
We show that the difference of adiabatic phases, that are basis-dependent, in noncyclic evolution of non-degenerate quantum systems have to be taken into account to give the correc…
Classical Correlation and Quantum Discord in Critical Systems
M. S. Sarandy
We discuss the behavior of quantum and classical pairwise correlations in critical systems, with the quantumness of the correlations measured by the quantum discord. We analyticall…
Economical ontological models for discrete quantum systems
Ernesto F. Galvao
I use the recently proposed framework of ontological models [Harrigan et al., arXiv:0709.1149v2] to obtain economical models for results of tomographically complete sets of measure…