54 citations · 287 across the 18 of their papers we have counts for
18 papers
Generation and transfer of entangled states between two connected microtoroidal cavities: analysis of different types of coupling
Emilio H. S. Sousa, A. Vidiella-Barranco, J. A. Roversi
We investigate the generation and transfer of entangled states between two coupled microtoroidal cavities considering two different types of couplings, namely i) via a bridge qubit…
Entanglement dynamics between two-level atoms surrounding a microtoroidal cavity and influences of initial states
Emilio H. S. Sousa, J. A. Roversi
We theoretically investigate how the initial state influence the entanglement dynamics between two and three two-level atoms with dipole-dipole interaction (DDI) coupled to a whisp…
Quantum Key Distribution using Continuous-variable non-Gaussian States
L. F. M. Borelli, L. S. Aguiar, J. A. Roversi +1
In this work we present a quantum key distribution protocol using continuous-variable non-Gaussian states, homodyne detection and post-selection. The employed signal states are the…
Dynamics of a superconducting qubit coupled to the quantized cavity field: a unitary transformation approach
Dagoberto S. Freitas, A. Vidiella-Barranco, J. A. Roversi
We present a novel approach for studying the dynamics of a superconducting qubit in a cavity. We succeed in linearizing the Hamiltonian through the application of an appropriate un…
Implementation of a two-qubit controlled-U gate based on unconventional geometric phase with a constant gating time
Bruno F. C. Yabu-uti, José A. Roversi
We propose an alternative scheme to implement a two-qubits Controlled-U gate in the hybrid system atom- (coupled cavities array). Our scheme results in a constant gating time…
Perfect and flexible quantum state transfer in the hybrid system atom coupled-cavity
Bruno F. C. Yabu-uti, José A. Roversi
We investigate a system composed of coupled cavities and two-level atoms interacting one at a time. Adjusting appropriately the atom-field detuning, and make the hopping rate o…