Quantum computation over the butterfly network

In order to investigate distributed quantum computation under restricted network resources, we introduce a quantum computation task over the butterfly network where both quantum and classical communications are limited. We consider deterministically performing a two-qubit global unitary operation on two unknown inputs given at different nodes, with outputs at two distinct nodes. By using a particular resource setting introduced by M. Hayashi [Phys. Rev. A \textbf{76}, 040301(R) (2007)], which is capable of performing a swap operation by adding two maximally entangled qubits (ebits) between the two input nodes, we show that unitary operations can be performed without adding any entanglement resource, if and only if the unitary operations are locally unitary equivalent to controlled unitary operations. Our protocol is optimal in the sense that the unitary operations cannot be implemented if we relax the specifications of any of the channels. We also construct protocols for performing controlled traceless unitary operations with a 1-ebit resource and for performing global Clifford operations with a 2-ebit resource.Comment: 12 pages, 12 figures, the second version has been significantly expanded, and author ordering changed and the third version is a minor revision of the previous versio

Classification of delocalization power of global unitary operations in terms of LOCC one-piece relocalization

We study how two pieces of localized quantum information can be delocalized across a composite Hilbert space when a global unitary operation is applied. We classify the delocalization power of global unitary operations on quantum information by investigating the possibility of relocalizing one piece of the quantum information without using any global quantum resource. We show that one-piece relocalization is possible if and only if the global unitary operation is local unitary equivalent of a controlled-unitary operation. The delocalization power turns out to reveal different aspect of the non-local properties of global unitary operations characterized by their entangling power

Fixed-point smoothing in Hilbert spaces

The fixed-point smoothing estimator and smoothing error covariance operator equations are derived for infinite-dimensional linear systems using both the Wiener-Hoph theory in Hilbert spaces developed by Falb and the abstract evolution theory. Since it is clear that the prediction problems can be solved by the same approach, the present results in conjunction with the work of Falb on filtering give a complete treatment of the infinite-dimensional linear estimation problem from the viewpoint of Wiener-Hoph theory. Finally, based on the optimal smoothing estimator in Hilbert space, the fixed-point smoothing estimator is derived for a linear distributed parameter system of parabolic type

Ipteks Sistem Pengendalian Intern Pemerintah pada Dinas Perindustrian dan Perdagangan Provinsi Sulawesi Utara

This research is intended to find out the appropriate or not yet the application of the System of Internal Control of the Government in the Department of Industri and Trade of the North Sulawesi Province with Government Regulation No. 60 Year 2008 about Control Systems Government Intern, by way of identifying what became an obstacle in the process of implementation of the SPIP and any efforts being undertaken in dealing with the application of constraints of SPIP for increased levels of maturity of SPIP. The general the application of SPIP in Department of industry and trade of the North Sulawesi province were in accordance with government regulation No. 60 the year 2008 about SPIP. But, not to the achievement of the target level of 3 (three) maturity of SPIP in the Departmen of industry and trade shows that the application of SPIP still experience particular constraints. As for the constraints in the implementation of SPIP namely; 1) HR which is not yet competent, 2) lack of discipline, 3) evaluation activities, inadequate. Efforts are being made to overcome the constraints in the implementation of SPIP are: 1 HR development program through training of his own Office, 2) build effective communication, 3) build organizational commitment

Generalized monogamy of contextual inequalities from the no-disturbance principle

In this paper we demonstrate that the property of monogamy of Bell violations seen for no-signaling correlations in composite systems can be generalized to the monogamy of contextuality in single systems obeying the Gleason property of no-disturbance. We show how one can construct monogamies for contextual inequalities by using the graph-theoretic technique of vertex decomposition of a graph representing a set of measurements into subgraphs of suitable independence numbers that themselves admit a joint probability distribution. After establishing that all the subgraphs that are chordal graphs admit a joint probability distribution, we formulate a precise graph-theoretic condition that gives rise to the monogamy of contextuality. We also show how such monogamies arise within quantum theory for a single four-dimensional system and interpret violation of these relations in terms of a violation of causality. These monogamies can be tested with current experimental techniques.Comment: 7 pages, 3 figure

Particle addition and subtraction as a test of bosonic quality

We propose a test to measure the bosonic quality of particles with respect to physical operations of single-particle addition and subtraction. We apply our test to investigate bosonic properties of composite particles made of an even number of fermions and suggest its experimental implementation. Furthermore, we discuss features of the processes of particle addition and subtraction in terms of optimal quantum operations.Comment: 5 page

Precise determination of atom configuration in partially disordered spinel compounds by HARECSX.

Electron channeling enhanced x-ray spectroscopy has been being widely used to determine ordered arrangement of component atoms in multinary inorganic or metallic crystals. Recent theoretical advancements in the modeling of characteristic x-ray emission by inelastic scattering of incident electrons under dynamical diffraction conditions has achieved remarkable progress, and it has enabled scientists to analyze the experimental intensity of x-ray emission in precise detail. In this study, the ion configuration in magnesium aluminate spinel (MgO{center_dot}nAl{sub 2}O{sub 3}) has been examined by measurements of characteristic x-ray emission as a function of incident electron beam direction at high angular resolution, a technique which we have termed HARECXS (high angular resolution electron channeling x-ray spectroscopy). This paper reports the results and emphasizes the applicability of HARECXS to partially disordered materials

Hepatic rhythmicity of endoplasmic reticulum stress is disrupted in perinatal and adult mice models of high-fat diet-induced obesity

We investigated the regulation of hepatic ER stress in healthy liver and adult or perinatally programmed diet-induced non-alcoholic fatty liver disease (NAFLD). Female mice were fed either obesogenic or control diet before mating, during pregnancy and lactation. Post-weaning, offspring from each maternal group were divided into either obesogenic or control diet. At six months, offspring were sacrificed at 4-h intervals over 24 h. Offspring fed obesogenic diets developed NAFLD phenotype, and the combination of maternal and offspring obesogenic diets exacerbated this phenotype. UPR signalling pathways (IREα, PERK, ATF6) and their downstream regulators showed different basal rhythmicity, which was modified in offspring exposed to obesogenic diet and maternal programming. The double obesogenic hit increased liver apoptosis measured by TUNEL staining, active caspase-3 and phospho-JNK and GRP78 promoter methylation levels. This study demonstrates that hepatic UPR is rhythmically activated. The combination of maternal obesity (MO) and obesogenic diets in offspring triggered altered UPR rhythmicity, DNA methylation and cellular apoptosis