352 citations · 1.9k across the 23 of their papers we have counts for
5 papers · 2 filters
Robustness of bipartite Gaussian entangled beams propagating in lossy channels
F. A. S. Barbosa, A. S. Coelho, A. J. de Faria +4
Subtle quantum properties offer exciting new prospects in optical communications. Quantum entanglement enables the secure exchange of cryptographic keys and the distribution of qua…
Experimental demonstration of three-color entanglement
A. S. Coelho, F. A. S. Barbosa, K. N. Cassemiro +3
Entanglement is the essential quantum resource for a potential speed-up of information processing, as well as for sophisticated quantum communication. Quantum information networks…
On the analogy between a single atom and an optical resonator
Simon Heugel, Alessandro S. Villar, Markus Sondermann +2
A single atom in free space can have a strong influence on a light beam and a single photon can have a strong effect on a single atom in free space. Regarding this interaction, two…
Disentanglement in Bipartite Continuous-Variable Systems
F. A. S. Barbosa, A. S. Coelho, A. J. de Faria +4
Entanglement in bipartite continuous-variable systems is investigated in the presence of partial losses, such as those introduced by a realistic quantum communication channel, e.g.…
The quantum vacuum at the foundations of classical electrodynamics
G. Leuchs, A. S. Villar, L. L. Sanchez-Soto
In the classical theory of electromagnetism, the permittivity and the permeability of free space are constants whose magnitudes do not seem to possess any deeper physical meaning.…