171 citations · 449 across the 22 of their papers we have counts for
6 papers · 1 filter
Disorder-safe entanglement transfer through ladder qubit chains
Guilherme M. A. Almeida, Andre M. C. Souza, Francisco +3
We study an entanglement transfer protocol in a two-leg ladder spin-1/2 chain in the presence of disorder. In the regime where on-site energies and the intrachain couplings follow…
Coexistence of extended and localized states in one-dimensional systems
Andre M. C. Souza, Roberto. F. S. Andrade
Mobility edge transitions from localized to extended states have been observed in two and three dimensional systems, for which sound theoretical explanations have also been derived…
Quantum-state transfer in staggered coupled-cavity arrays
Guilherme M. A. Almeida, Francesco Ciccarello, Tony J. G. Apollaro +1
We consider a coupled-cavity array, where each cavity interacts with an atom under the rotating-wave approximation. For a staggered pattern of inter-cavity couplings, a pair of fie…
Quantum transport with coupled cavities on the Apollonian network
Guilherme M. A. Almeida, André M. C. Souza
We study the dynamics of single photonic and atomic excitations in the Jaynes-Cummings-Hubbard (JCH) model where the cavities are arranged in an Apollonian network (AN). The existe…
Thermal entanglement witness for materials with variable local spin lengths
Andre M. C. Souza, Francisco A. G. Almeida
We show that the thermal entanglement in a spin system using only magnetic susceptibility measurements is restricted to the insulator materials. We develop a generalization of the…
Enhancement of thermal entanglement in two-qubit XY models
Celia Anteneodo, Andre M. C. Souza
We analyze conditions leading to enhancement of thermal entanglement in two-qubit XY models. The effect of including cross-product terms, besides the standard XY exchange interacti…