Demonstration of Universal Parametric Entangling Gates on a Multi-Qubit Lattice

We show that parametric coupling techniques can be used to generate selective entangling interactions for multi-qubit processors. By inducing coherent population exchange between adjacent qubits under frequency modulation, we implement a universal gateset for a linear array of four superconducting qubits. An average process fidelity of $\mathcal{F}=93\%$ is estimated for three two-qubit gates via quantum process tomography. We establish the suitability of these techniques for computation by preparing a four-qubit maximally entangled state and comparing the estimated state fidelity against the expected performance of the individual entangling gates. In addition, we prepare an eight-qubit register in all possible bitstring permutations and monitor the fidelity of a two-qubit gate across one pair of these qubits. Across all such permutations, an average fidelity of $\mathcal{F}=91.6\pm2.6\%$ is observed. These results thus offer a path to a scalable architecture with high selectivity and low crosstalk

Kinetic parameters related to nitrogen uptake efficiency of pear trees (Pyrus communis).

Genetic improvement programs for pear trees in Brazil are characterized by rootstock (hypobiotic) selection mainly considering physiological attributes such as vigor, breakage of dormancy, propagation easiness, and sanitary characteristics, such as resistance to pests and diseases. However, kinetic parameters that determine nutrient uptake efficiency are not usually considered as, for example, nitrogen (N) in forms of NO3 − and NH4 +. The objective of this study was to evaluate the kinetic parameters related to N uptake in pear selection '54′ and '971′ as additional criteria for rootstock selection. The plants were acclimatized in a half-strength Hoagland solution and tested to assess the depletion of the internal reserves at 15 and 30 days, in CaSO4 solution to evaluate the depletion period during 65 h. The selection '971′ showed more significant NO3 − and NH4 + uptake efficiency, because presented higher Vmax values and Influx. The internal reserve depletion (IRD) period for the evaluated selections was 30 days in CaSO4 solution. The evaluation period of the depletion period to reach the Cmin for selections '971′ and '54′ was 64 and 65 h for NO3 − respectively, and 65 h for NH4 +. The selection '971′ had a higher affinity with the NO3 − ion when correlated with the physiological parameters of minimum fluorescence (Fo) and electron transport rate (ETRm)

Nitrogen fertilization affects yield and fruit quality in pear.

Made available in DSpace on 2019-09-18T00:43:14Z (GMT). No. of bitstreams: 1 GilbertoNavaHortscienceNitrogenfertilizationaffectsyieldand.pdf: 853244 bytes, checksum: 3f02f2dd6b4f23182ebe75319ad4b30b (MD5) Previous issue date: 2019bitstream/item/202086/1/Gilberto-Nava-Hortscience-Nitrogen-fertilization-affects-yield-and.pd

Imunofluorescencia indireta para diagnostico sorológico de Babesia bigemina e Babesia bovis: produção de antígeno com cepas isoladas no estado de Mato Grosso do Sul e avaliação preliminar do teste.

Babesia bigemina; Babesia bovis; Imunofluorescencia; America do Sul; Brasil; Mato Grosso do Sul.bitstream/item/137575/1/PESQ-EM-ANDAMENTO-32.pdfCNPGC

Calagem, adubação e estado nutricional em Pereiras.

bitstream/item/219427/1/Gilberto-Nava-Novo-Documento-2020-12-16-13.18.46.pd

Copper and zinc accumulation, fractionation and migration in vineyard soils from Santa Catarina State, Brazil.

The purpose of this study was to evaluate Cu and Zn migration and fractions in sandy soil of vineyards. In Urussanga (SC), Brazil, soil samples were collected from a 4-year-old and 15-yearold vineyard, and from a forested area. In the soils, the chemical characteristics of Cu and Zn were analyzed by the EDTA method, which determines the fraction available in soil; 3050B method of the USEPA for total concentrations, which represents the pseudosoil contents in the soil; and chemical fractionation, which estimates soluble fraction, exchangeable fraction, fraction associated with clay minerals, fraction associated with organic matter and residual fraction. The results show that there is accumulation of Cu and Zn in sandy soils cultivated with grapevines and with frequent fungicide applications. These higher levels were found in soils with longer cultivation time (15 years old), but were restricted to the superficial layers of the soil. Most of the Cu was extracted by EDTA method, and it may be considered as available to plants. The EDTA also extracted a small part of Zn. Most of the Cu in the vineyard soils can be characterized by low geochemical mobility, but in the uppermost soil layers of the oldest vineyard, there was an increase in Cu content associated with soil organic matter. Most of the Zn in the vineyard soil was associated with minerals, which indicates low mobility and also low potential for toxicity to plants and microorganisms. Key words: availability, chemical fractionation, toxicity, environmental contamination, Vitisvinifera.Made available in DSpace on 2019-01-09T23:53:16Z (GMT). No. of bitstreams: 1 Copperandzincaccumulationfractionation.pdf: 618556 bytes, checksum: 35756820009ffff730b38562c1ef7af3 (MD5) Previous issue date: 2019-01-09bitstream/item/190033/1/Copper-and-zinc-accumulation-fractionation.pd