Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Toyama, F. M."'
Autor:
Toyama, F. M., van Dijk, W.
In the Grover-type quantum search process a search operator is iteratively applied, say, k times, on the initial database state. We present an additive decomposition scheme such that the iteration process is expressed, in the computational space, as
Externí odkaz:
http://arxiv.org/abs/1706.01519
Autor:
van Dijk, W., Toyama, F. M.
Publikováno v:
Phys. Rev. E 90, 063309 (12 pages) (2014)
We develop an approach to solving numerically the time-dependent Schrodinger equation when it includes source terms and time-dependent potentials. The approach is based on the generalized Crank-Nicolson method supplemented with an Euler-MacLaurin exp
Externí odkaz:
http://arxiv.org/abs/1412.1802
Phase matching has been studied for the Grover algorithm as a way of enhancing the efficiency of the quantum search. Recently Li and Li found that a particular form of phase matching yields, with a single Grover operation, a success probability great
Externí odkaz:
http://arxiv.org/abs/0801.2956
Autor:
van Dijk, W., Toyama, F. M.
Publikováno v:
Phys. Rev. E 75, 036707 (2007)
We present a generalization of the often-used Crank-Nicolson (CN) method of obtaining numerical solutions of the time-dependent Schr\"odinger equation. The generalization yields numerical solutions accurate to order $(\Delta x)^{2r-1}$ in space and $
Externí odkaz:
http://arxiv.org/abs/physics/0701150
We developed novel conditional expressions (CEs) for Lane and Bates' blind deconvolution. The CEs are given in term of the derivatives of the zero-values of the z-transform of given images. The CEs make it possible to automatically detect multiple bl
Externí odkaz:
http://arxiv.org/abs/cs/0610002
A simple search method for finding a blur convolved in a given image is presented. The method can be easily extended to a large blur. The method has been experimentally tested with a model blurred image.
Comment: 3 pages, 2 figures, conference
Comment: 3 pages, 2 figures, conference
Externí odkaz:
http://arxiv.org/abs/cs/0609165
We present conditional expression (CE) for finding blurs convolved in given images. The CE is given in terms of the zero-values of the blurs evaluated at multi-point. The CE can detect multiple blur all at once. We illustrate the multiple blur-detect
Externí odkaz:
http://arxiv.org/abs/cs/0609164
Autor:
Koide, T., Toyama, F. M.
Publikováno v:
Phys.Rev. A66 (2002) 064102
We examine a fast decay process that arises in the transition period between the Gaussian and exponential decay processes in quantum decay systems. It is usually expected that the decay is decelerated by a confinement potential barrier. However, we f
Externí odkaz:
http://arxiv.org/abs/quant-ph/0208030
We present a Bohmian description of a decaying quantum system. A particle is initially confined in a region around the origin which is surrounded by a repulsive potential barrier. The particle leaks out in time tunneling through the barrier. We deter
Externí odkaz:
http://arxiv.org/abs/quant-ph/0005109
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