Results 71 to 80 of about 240,977 (170)

Quantum optical synthesis in 2D time–frequency space

open access: yesAPL Photonics, 2021
Conventional optical synthesis, the manipulation of the phase and amplitude of spectral components to produce an optical pulse in different temporal modes, is revolutionizing ultrafast optical science and metrology. These technologies rely on the Fourier
Rui-Bo Jin   +8 more
doaj   +1 more source

Mirror symmetry on K3 surfaces via Fourier-Mukai transform

open access: yes, 1997
We use a relative Fourier-Mukai transform on elliptic K3 surfaces $X$ to describe mirror symmetry. The action of this Fourier-Mukai transform on the cohomology ring of $X$ reproduces relative T-duality and provides an infinitesimal isometry of the moduli
Bartocci, Claudio   +3 more
core   +2 more sources

Interpolating Binary and Multivalued Logical Quantum Gates

open access: yesProceedings, 2017
A method for synthesizing quantum gates is presented based on interpolation methods applied to operators in Hilbert space. Starting from the diagonal forms of specific generating seed operators with non-degenerate eigenvalue spectrum one obtains for ...
Zeno Toffano, François Dubois
doaj   +1 more source

Double Quantum Image Encryption Based on Arnold Transform and Qubit Random Rotation

open access: yesEntropy, 2018
Quantum image encryption offers major advantages over its classical counterpart in terms of key space, computational complexity, and so on. A novel double quantum image encryption approach based on quantum Arnold transform (QAT) and qubit random rotation
Xingbin Liu, Di Xiao, Cong Liu
doaj   +1 more source

Fourier-transforming with quantum annealers [PDF]

open access: yesFrontiers in Physics, 2014
We introduce a set of quantum adiabatic evolutions that we argue may be used as `building blocks', or subroutines, in the onstruction of an adiabatic algorithm that executes Quantum Fourier Transform (QFT) with the same complexity and resources as its gate-model counterpart.
openaire   +2 more sources

A Comparative Study of Quantum Haar Wavelet and Quantum Fourier Transforms for Quantum Image Transmission

open access: yesInformation
Quantum communication has achieved significant performance gains compared to classical systems but remains sensitive to channel noise and decoherence.
Udara Jayasinghe   +2 more
doaj   +1 more source

Clifford algebras, Fourier transforms, and quantum mechanics [PDF]

open access: yesMathematical Methods in the Applied Sciences, 2012
In this review, we give an overview of several recent generalizations of the Fourier transform, related to either the Lie algebraor the Lie superalgebra. In the former case, one obtains scalar generalizations of the Fourier transform, including the fractional Fourier transform, the Dunkl transform, the radially deformed Fourier transform, and the super
openaire   +3 more sources

(t, n) Threshold d-Level Quantum Secret Sharing

open access: yesScientific Reports, 2017
Most of Quantum Secret Sharing(QSS) are (n, n) threshold 2-level schemes, in which the 2-level secret cannot be reconstructed until all n shares are collected.
Xiu-Li Song   +3 more
doaj   +1 more source

Implementing Quantum Fourier Transform in a Digital Quantum Coprocessor [PDF]

open access: yesAdvances in Cyber-Physical Systems, 2019
In this paper, the digital quantum coprocessor has been checked for the possibility of quantum Fourier transform, which is the main quantum operation of the Shor's algorithm. To do this, the model of the 4-qubit coprocessor has been created, its work has been simulated and it has been implemented in FPGA.
openaire   +2 more sources

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