Results 31 to 40 of about 240,977 (170)

Exact quantum Fourier transforms and discrete logarithm algorithms [PDF]

open access: yes, 2003
We show how the quantum fast Fourier transform (QFFT) can be made exact for arbitrary orders (first for large primes). For most quantum algorithms only the quantum Fourier transform of order $2^n$ is needed, and this can be done exactly.
Mosca, Michele, Zalka, Christof
core   +4 more sources

Quantum 3D FFT in Tomography

open access: yesApplied Sciences, 2023
The Radon transform constitutes the conventional tool for tomosynthesis, i.e., the composition of cross-sections of an object from its projections. It is actually a version of the Fourier Transform, which is accompanied by the appropriate digital high ...
Georgia Koukiou   +1 more
doaj   +1 more source

Average-Case Verification of the Quantum Fourier Transform Enables Worst-Case Phase Estimation [PDF]

open access: yesQuantum, 2022
The quantum Fourier transform (QFT) is a key primitive for quantum computing that is typically used as a subroutine within a larger computation, for instance for phase estimation.
Noah Linden, Ronald de Wolf
doaj   +1 more source

Research of Quantum Algorithm Based on IBM Q Platform [PDF]

open access: yesJisuanji gongcheng, 2018
To explore the implementation status of multi-bit quantum algorithm in quantum chips and simulators,Grover search algorithm,quantum random walk algorithm and quantum Fourier transform algorithm are run on IBM quantum chips and simulators respectively.For
WEI Jia,NI Ming,ZHOU Ming,JIANG Wenbing
doaj   +1 more source

Relating the Lorentzian and exponential: Fermi's approximation,the Fourier transform and causality [PDF]

open access: yes, 2002
The Fourier transform is often used to connect the Lorentzian energy distribution for resonance scattering to the exponential time dependence for decaying states.
A. Bohm   +32 more
core   +2 more sources

Quantum Algorithms for Some Hidden Shift Problems [PDF]

open access: yes, 2003
Almost all of the most successful quantum algorithms discovered to date exploit the ability of the Fourier transform to recover subgroup structures of functions, especially periodicity.
Hallgren, Sean   +2 more
core   +3 more sources

Sequential Quantum Multiparty Signature Based on Quantum Fourier Transform and Chaotic System

open access: yesIEEE Access, 2020
Motivated by the quantum Fourier transform (QFT), a sequential quantum multiparty signature (QMS) scheme is proposed. Several signatories jointly accomplish the task in a chaotic encryption system. Alice generates and sends the encrypted message with the
Xiaoping Lou   +4 more
doaj   +1 more source

Rotational abstractions for verification of quantum Fourier transform circuits

open access: yesIET Quantum Communication, 2023
With the race to build large‐scale quantum computers and efforts to exploit quantum algorithms for efficient problem solving in science and engineering disciplines, the requirement to have efficient and scalable verification methods are of vital ...
Arun Govindankutty   +2 more
doaj   +1 more source

Robustness of quantum Fourier transform interferometry [PDF]

open access: yesOptics Letters, 2019
We analyse the effect of decoherence and noise on quantum Fourier transform interferometry, in which a boson sampling photonic network is used to measure optical phase gradients. This novel type of metrology is shown to be robust against phase decoherence.
Opanchuk, Bogdan   +3 more
openaire   +4 more sources

Implementation of Period-Finding Algorithm by Means of Simulating Quantum Fourier Transform [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2010
In this paper, we introduce quantum fourier transform as a key ingredient for many useful algorithms. These algorithms make a solution for problems which is considered to be intractable problems on a classical computer.
Zohreh Moghareh Abed   +2 more
doaj  

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