Information-Theoretic Meaning of Quantum Information Flow and Its Applications to Amplitude Amplification Algorithms

The advantages of quantum information processing are in many cases obtained as consequences of quantum interactions, especially for computational tasks where two-qubit interactions are essential. In this work, we establish the framework of analyzing and quantifying loss or gain of information on a quantum system when the system interacts with its environment. We show that the information flow, the theoretical method of characterizing (non-)Markovianity of quantum dynamics, corresponds to the rate of the minimum uncertainty about the system given quantum side information. Thereafter, we analyze the information exchange among subsystems that are under the performance of quantum algorithms, in particular, the amplitude amplification algorithms where the computational process relies fully on quantum evolution. Different realizations of the algorithm are considered, such as i)quantum circuits, ii) analog computation, and iii) adiabatic computation. It is shown that, in all the cases, our formalism provides insights about the process of amplifying the amplitude from the information flow or leakage on the subsystems.Comment: 7 pages, 5 figures, close to the published versio

Theoretical Models of the Brans-Dicke Parameter for Time Independent Deceleration Parameters

The dependence of the dimensionless Brans-Dicke (BD) coupling parameter upon time and the scalar field has been determined, for an isotropic and homogeneous space of zero curvature, by solving BD field equations and the wave equation for the scalar field. For this purpose, very simple expressions of empirical scale factors, that generate constant deceleration parameters, have been used here in two theoretical models. The characteristics of time dependence of the BD parameter, obtained from these two models, are in qualitative agreement with each other. The mathematical expressions representing the rate of change of the BD parameter with time, based on these two models, are found to have identical forms. Combining the expressions of the BD parameter obtained from these two models, a method of determination of the present value of the equation-of-state (EoS) parameter of the cosmic fluid has been discussed. Its value is found to be consistent with the ranges of values obtained from other studies based on recent observations

Theoretical Models of the Brans-Dicke Parameter for Time Independent Deceleration Parameters

The dependence of the dimensionless Brans-Dicke (BD) coupling parameter upon time and the scalar field has been determined, for an isotropic and homogeneous space of zero curvature, by solving BD field equations and the wave equation for the scalar field. For this purpose, very simple expressions of empirical scale factors, that generate constant deceleration parameters, have been used here in two theoretical models. The characteristics of time dependence of the BD parameter, obtained from these two models, are in qualitative agreement with each other. The mathematical expressions representing the rate of change of the BD parameter with time, based on these two models, are found to have identical forms. Combining the expressions of the BD parameter obtained from these two models, a method of determination of the present value of the equation-of-state (EoS) parameter of the cosmic fluid has been discussed. Its value is found to be consistent with the ranges of values obtained from other studies based on recent observations

Time Variation of the Matter Content of the Expanding Universe in the Framework of Brans-Dicke Theory

In the framework of Brans-Dicke theory, a cosmological model regarding the expanding universe has been formulated by considering an inter-conversion of matter and dark energy. A function of time has been incorporated into the expression of the density of matter to account for the non-conservation of the matter content of the universe. This function is proportional to the matter content of the universe. Its functional form is determined by using empirical expressions of the scale factor and the scalar field in field equations. This scale factor has been chosen to generate a signature flip of the deceleration parameter with time. The matter content is found to decrease with time monotonically, indicating a conversion of matter into dark energy. This study leads us to the expressions of the proportions of matter and dark energy of the universe. Dependence of various cosmological parameters upon the matter content has been explored

Convicted drunk drivers in an electronically monitored home detention program: a three-year study on exit status and subsequent recidivism

This study included adult offenders convicted of drunk driving, sentenced to the EMHD program, and who completed or failed to complete their sentences from the beginning of 2006 through the end of 2008 (three-year time period); afterward, the participants who successfully exited the program were followed till the end of 2009 to investigate their post-program recidivism. At a minimum, the follow-up period for recidivism was one year. Specifically, the objective of this study was to expand on the literature by focusing on the “exit status” of the convicted drunk drivers sentenced to the EMHD program during the three-year study period, and also on “recidivism” among the subjects after their successful exit from the program

Time Variation of the Matter Content of the Expanding Universe in the Framework of Brans-Dicke Theory

In the framework of Brans-Dicke theory, a cosmological model regarding the expanding universe has been formulated by considering an inter-conversion of matter and dark energy. A function of time has been incorporated into the expression of the density of matter to account for the non-conservation of the matter content of the universe. This function is proportional to the matter content of the universe. Its functional form is determined by using empirical expressions of the scale factor and the scalar field in field equations. This scale factor has been chosen to generate a signature flip of the deceleration parameter with time. The matter content is found to decrease with time monotonically, indicating a conversion of matter into dark energy. This study leads us to the expressions of the proportions of matter and dark energy of the universe. Dependence of various cosmological parameters upon the matter content has been explored

OSOBE OSUĐENE ZBOG VOŽNJE U PIJANOM STANJU UKLJUČENE U PROGRAM ELEKTRONSKOG NADZORA U KUĆI: TROGODIŠNJE ISTRAŽIVANJE STATUSA PRI ZAVRŠETKU PROGRAMA I RECIDIVIZMA NAKON PROGRAMA

This study included adult offenders convicted of drunk driving, sentenced to the EMHD program, and who completed or failed to complete their sentences from the beginning of 2006 through the end of 2008 (three-year time period); afterward, the participants who successfully exited the program were followed till the end of 2009 to investigate their post-program recidivism. At a minimum, the follow-up period for recidivism was one year. Specifically, the objective of this study was to expand on the literature by focusing on the “exit status” of the convicted drunk drivers sentenced to the EMHD program during the three-year study period, and also on “recidivism” among the subjects after their successful exit from the program.Istraživanje prikazano u radu obuhvaća odrasle počinitelje kaznenih djela osuđene zbog vožnje u pijanom stanju, a koji su bili osuđeni na EMHD program te su isti uspješno ili neuspješno završili u razdoblju od početka 2006. do kraja 2008. godine. Nakon toga, oni koji su uspješno završili program praćeni su do kraja 2009. s namjerom da se istraži recidivizam nakon programa. Razdoblje praćenja recidivizma sudionika istraživanja iznosilo je najmanje godinu dana. Specifičnije, cilj ovog istraživanja bio je proširiti znanja iz literature kroz fokus na “status pri izlasku” osoba osuđenih zbog vožnje u pijanom stanju kao i na “recidivizam” onih koji su uspješno završili program