32 citations · 68 across the 5 of their papers we have counts for
5 papers
Performance analysis of continuous-variable quantum key distribution using non-Gaussian states
L. S. Aguiar, L. F. M. Borelli, J. A. Roversi +1
In this study, we analyze the efficiency of a protocol with discrete modulation of continuous variable non-Gaussian states, the coherent states having one photon added and then one…
Dynamics of two atoms coupled to a cavity field
J. A. Roversi, A. Vidiella-Barranco, H. Moya-Cessa
We investigate the interaction of two two-level atoms with a single mode cavity field. One of the atoms is exactly at resonance with the field, while the other is well far from res…
A proposal of quantum logic gates using cold trapped ions in a cavity
F. L. Semiao, A. Vidiella-Barranco, J. A. Roversi
We propose a scheme for implementation of logical gates in a trapped ion inside a high-Q cavity. The ion is simultaneously interacting with a (classical) laser field as well as wit…
Unitary transformation approach for the trapped ion dynamics
H. Moya-Cessa, A. Vidiella-Barranco, J. A. Roversi +1
We present a way of treating the problem of the interaction of a single trapped ion with laser beams based on successive aplications of unitary transformations onto the Hamiltonian…
Recovering coherence from decoherence: a method of quantum state reconstruction
H. Moya-Cessa, J. A. Roversi, S. M. Dutra +1
We present a feasible scheme for reconstructing the quantum state of a field prepared inside a lossy cavity. Quantum coherences are normally destroyed by dissipation, but we show t…