248 citations
6 papers
Bipolariton laser emission from a GaAs microcavity
L. M. Moreira, J. C. Gonzalez, A. G. Oliveira +1
Biexciton emission properties were studied in a single GaAs quantum well semiconductor planar microcavity by photoluminescence measurements at low temperatures. At high pump intens…
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…
Improving Spam Detection Based on Structural Similarity
Luiz H. Gomes, Fernando D. O. Castro, Rodrigo B. Almeida +3
We propose a new detection algorithm that uses structural relationships between senders and recipients of email as the basis for the identification of spam messages. Users and rece…
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…
Quantifying Entanglement with Witness Operators
Fernando Guadalupe Santos Lins Brandao
We present an unifying approach to the quantification of entanglement based on entanglement witnesses, which includes several already established entanglement measures such as the…
The Role of hidden ambiguities in the Linear Sigma Model with fermions
Brigitte Hiller, A. L. Mota, M. C. Nemes +2
The Linear Sigma Model (LSM) with quark degrees of freedom is used to show that radiative corrections generate undetermined finite contributions. Their origin…