145 research outputs found
Biomphalaria straminea no Peru e sua suscetibilidade a cepas brasileiras de Schistosoma mansoni
Phenetic analysis of Panstrongylus megistus Burmeister, 1835 (Hemiptera: Reduviidae: Triatominae) in the State of Paraná-Brazil
Entangled-Photon Generation from Parametric Down-Conversion in Media with Inhomogeneous Nonlinearity
We develop and experimentally verify a theory of Type-II spontaneous
parametric down-conversion (SPDC) in media with inhomogeneous distributions of
second-order nonlinearity. As a special case, we explore interference effects
from SPDC generated in a cascade of two bulk crystals separated by an air gap.
The polarization quantum-interference pattern is found to vary strongly with
the spacing between the two crystals. This is found to be a cooperative effect
due to two mechanisms: the chromatic dispersion of the medium separating the
crystals and spatiotemporal effects which arise from the inclusion of
transverse wave vectors. These effects provide two concomitant avenues for
controlling the quantum state generated in SPDC. We expect these results to be
of interest for the development of quantum technologies and the generation of
SPDC in periodically varying nonlinear materials.Comment: submitted to Physical Review
Operational characteristics of four metering systems for agricultural fertilizers and amendments
Effects of sex and genotype on performance and yield characteristics of free range broiler chickens
Wolbachia spp. interfere na detecção molecular de Ehrlichia canis e Anaplasma platys em cães com microfilaremia
Células-tronco mononucleares associadas ao plasma rico em plaquetas na consolidação de falha óssea no cão. Estudo piloto
Teor e composição do óleo essencial de quatro acessos e duas cultivares de manjericão (Ocimum basilicum L.)
Influência das condições térmicas do galpão de espera climatizado na mortalidade pré-abate de frangos de corte
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