Scheme for teleportation of quantum states onto a mechanical resonator

We propose an experimentally feasible scheme to teleport an unkown quantum state onto the vibrational degree of freedom of a macroscopic mirror. The quantum channel between the two parties is established by exploiting radiation pressure effects.Comment: 5 pages, 2 figures, in press on PR

Generation of squeezed light in a nonlinear asymmetric directional coupler

We show that a nonlinear asymmetric directional coupler composed of a linear waveguide and a nonlinear waveguide operating by nondegenerate parametric amplification is an effective source of single-mode squeezed light. This is has been demonstrated, under certain conditions and for specific modes, for incident coherent beams in terms of the quasiprobability functions, photon-number distribution and phase distribution.Comment: 19 pages, 5 figure

An HST/WFPC2 survey of bright young clusters in M31. I. VdB0, a massive star cluster seen at t ≃ 25 Myr

Aims. We introduce our imaging survey of possible young massive globular clusters in M31 performed with the Wide Field and Planetary Camera 2 (WFPC2) on the Hubble Space Telescope (HST). We obtained shallow (to B ~ 25) photometry of individual stars in 20 candidate clusters. We present here details of the data reduction pipeline that is being applied to all the survey data and describe its application to the brightest among our targets, van den Bergh 0 (VdB0), taken as a test case. Methods. Point spread function fitting photometry of individual stars was obtained for all the WFPC2 images of VdB0 and the completeness of the final samples was estimated using an extensive set of artificial stars experiments. The reddening, the age and the metallicity of the cluster were estimated by comparing the observed color magnitude diagram (CMD) with theoretical isochrones. Structural parameters were obtained from model-fitting to the intensity profiles measured within circular apertures on the WFPC2 images. Results. Under the most conservative assumptions, the stellar mass of VdB0 is M> 2.4 x 10^4 M_☉ , but our best estimates lie in the range ≃4-9 x 10^4 M_☉. The CMD of VdB0 is best reproduced by models having solar metallicity and age ≃25 Myr. Ages less than ≃12 Myr and greater than ≃60 Myr are clearly ruled out by the available data. The cluster has a remarkable number of red super giants (≳18) and a CMD very similar to Large Magellanic Cloud clusters usually classified as young globulars such as NGC 1850, for example. Conclusions. VdB0 is significantly brighter (≳1 mag) than Galactic open clusters of similar age. Its present-day mass and half-light radius ((r_h = 7.4 pc) are more typical of faint globular clusters than of open clusters. However, given its position within the disk of M31, it is expected to be destroyed by dynamical effects, in particular by encounters with giant molecular clouds, within the next ~4 Gyr

Engineering squeezed states in high-Q cavities

While it has been possible to build fields in high-Q cavities with a high degree of squeezing for some years, the engineering of arbitrary squeezed states in these cavities has only recently been addressed [Phys. Rev. A 68, 061801(R) (2003)]. The present work examines the question of how to squeeze any given cavity-field state and, particularly, how to generate the squeezed displaced number state and the squeezed macroscopic quantum superposition in a high-Q cavity

Estabilidade de cultivares e linhagens de feijoeiro em diferentes ambientes no Estado de São Paulo.

O presente trabalho teve como objetivos realizar a avaliação genotípica de linhagens de feijoeiro no Estado de São Paulo pela estimativa dos valores genotípicos das linhagens para cada local e também para o ambiente médio de todos os locais. Estudos da adaptabilidade e estabilidade dos valores genotípicos preditos foram realizados pelo procedimento BLUP. A cultivar Graúna e a linhagem GEN 96A31 apresentaram superioridade média de 10% sobre a média geral dos 15 ambientes. Os valores foram computados já penalizando as linhagens pela instabilidade através dos locais e ao mesmo tempo capitalizando a capacidade de resposta (adaptabilidade) à melhoria do ambiente, usando propriedades intrínsecas ao método MHPRVG (Média Harmônica da Performance Relativa dos Valores Genéticos). Os métodos MHPRVG, Lin & Binns e Annicchiarico selecionaram, praticamente, as mesmas linhagens. Contudo, o método MHPRVG forneceu os resultados na própria escala de medição do caráter avaliado, os quais foram interpretados diretamente como valores genéticos para produtividade, estabilidade e adaptabilidade simultaneamente

Diagnóstico da ocorrência de fitonematoides associados à cultura da soja no oeste da Bahia na safra 20/21.

A soja é uma das commodities mais importantes do mundo e diversos são dos problemas fitossanitários que acometem esta cultura, dentre eles os fitonematoides. Dessa forma, esse trabalho foi realizado com o objetivo de determinar a incidência de espécies de fitonematoides que causam perdas na produtividade. O trabalho faz parte de um projeto que está sendo executado por meio da parceria entre a ABAPA, FBA, Embrapa Algodão e UFV, com duração de quatro anos, que visa dimensionar a situação dos fitonematoides em 250.000 hectares de áreas produtoras de soja na região oeste da Bahia

Metabolic homeostasis in chronic helminth infection is sustained by organ-specific metabolic rewiring

Opisthorchiasis, is a hepatobiliary disease caused by flukes of the trematode family Opisthorchiidae. A chronic form of the disease implies a prolonged coexistence of a host and the parasite. The pathological changes inflicted by the worm to the host's hepatobiliary system are well documented. Yet, the response to the infection also triggers a deep remodeling of the host systemic metabolism reaching a new homeostasis and affecting the organs beyond the worm location. Understanding the metabolic alternation in chronic opisthorchiasis, could help us to pinpoint pathways that underlie infection opening possibilities for the development of more selective treatment strategies. Here, with this report we apply an integrative, multicompartment metabolomics analysis, using multiple biofluids, stool samples and tissue extracts to describe metabolic changes in Opisthorchis felineus infected animals at the chronic stage. We show that the shift in lipid metabolism in the serum, a depletion of the amino acids pool, an alteration of the ketogenic pathways in the jejunum and a suppressed metabolic activity of the spleen are the key features of the metabolic host adaptation at the chronic stage of O. felineus infection. We describe this combination of the metabolic changes as a "metabolically mediated immunosuppressive status of organism" which develops during a chronic infection. This status in combination with other factors (e.g., parasite-derived immunomodulators) might increase risk of infection-related malignancy.Host-parasite interactio