19 citations · 43 across the 8 of their papers we have counts for
9 papers · 1 filter
How to fool the GHZ and W witnesses
D. Cavalcanti, M. O. Terra Cunha
In spite of the fact that there are only two classes of three-qubit genuine entanglement: W and GHZ, we show that there are three-qubit genuinely entangled states which can not be…
Increasing identical particle entanglement by fuzzy measurements
D. Cavalcanti, M. F. Santos, M. O. Terra Cunha +2
We investigate the effects of fuzzy measurements on spin entanglement for identical particles, both fermions and bosons. We first consider an ideal measurement apparatus and define…
Decoherence and localization in the double well model
Gabriela Barreto Lemos, M. F. Santos, J. G. Peixoto de Faria +2
We use a spin-1/2 model to analyze tunnelling in a double well system coupled to an external reservoir. We consider different noise sources such as fluctuations on the height and c…
Quantum Erasure: Quantum Interference Revisited
Stephen P. Walborn, Marcelo O. Terra Cunha, Sebastião Pádua +1
Recent experiments in quantum optics have shed light on the foundations of quantum physics. Quantum erasers - modified quantum interference experiments - show that quantum entangle…
Timescales for decoherence and dissipation: reasons for the success of master equations
M. O. Terra Cunha, S. Geraij Mokarzel, J. G. Peixoto de Faria +1
A perturbative treatment of reduced density operators of quantum subsystems is implemented in the same spirit as Fermi Golden Rule for scattering. Analytic expressions for linear e…
Tomographic Characterization of Three-Qubit Pure States with Only Two-Qubit Detectors
D. Cavalcanti, L. M. Cioletti, M. O. Terra Cunha
A tomographic process for three-qubit pure states using only pairwise detections is presented.