166 citations · 188 across the 2 of their papers we have counts for
6 papers
Spin polarization control via magnetic barriers and spin-orbit effects
Anh T. Ngo, J. M. Villas-Boas, Sergio E. Ulloa
We investigate the spin-dependent transport properties of two-dimensional electron gas (2DEG) systems formed in diluted magnetic semiconductors and in the presence of Rashba spin-o…
Investigation of Non Resonant Dot - Cavity Coupling in Two Dimensional Photonic Crystal Nanocavities
M. Kaniber, A. Laucht, A. Neumann +4
We study the optical emission from single semiconductor quantum dots coupled to the optical modes of photonic crystal nanocavities. For dots that are both spectrally and spatially…
Spin polarized photocurrent from quantum dots
J. M. Villas-Boas, Sergio E. Ulloa, A. O. Govorov
In this paper we show that it is possible to switch the spin polarization of the photocurrent signal obtained from a single self-assembled quantum dot photodiode under the effect o…
Decoherence of Rabi oscillations in a single quantum dot
J. M. Villas-Boas, Sergio E. Ulloa, A. O. Govorov
We develop a realistic model of Rabi oscillations in a quantum-dot photodiode. Based in a multi-exciton density matrix formulation we show that for short pulses the two-level model…
Selective coherent destruction of tunneling in a quantum-dot array
J. M. Villas-Boas, Sergio E. Ulloa, Nelson Studart
The coherent manipulation of quantum states is one of the main tasks required in quantum computation. In this paper we demonstrate that it is possible to control coherently the ele…
Coherent control of tunneling in a quantum dot molecule
J. M. Villas-Boas, A. O. Govorov, Sergio E. Ulloa
We demonstrate theoretically that it is possible to use Rabi oscillations to coherently control the electron tunneling in an asymmetric double quantum dot system, a quantum dot mol…