Articles with "quantum algorithm" as a keyword



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Efficient Quantum Algorithm for Similarity Measures for Molecules

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Published in 2018 at "International Journal of Theoretical Physics"

DOI: 10.1007/s10773-018-3805-4

Abstract: The similarity measures for molecules play an important role for research in chemistry, biology and drug design. In order to obtain similarity measures for giant molecules such as muscle protein titin, the existing classical algorithms… read more here.

Keywords: efficient quantum; algorithm; quantum algorithm; measures molecules ... See more keywords
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Quantum QR decomposition in the computational basis

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Published in 2020 at "Quantum Information Processing"

DOI: 10.1007/s11128-020-02777-4

Abstract: In this paper, we propose a quantum algorithm for approximating the QR decomposition of any $$N\times N$$ N × N matrix with a running time $$O(\frac{1}{\epsilon ^2}$$ O ( 1 ϵ 2 $$N^{2.5}\text {polylog}(N))$$ N… read more here.

Keywords: quantum; polylog; quantum algorithm; time ... See more keywords
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An exact quantum algorithm for testing 3-junta in Boolean functions with one uncomplemented product

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Published in 2021 at "Quantum Information Processing"

DOI: 10.1007/s11128-020-02953-6

Abstract: This paper modifies Chen’s algorithm, which is the first exact quantum algorithm for testing 2-junta, and proposes an exact quantum learning algorithm for finding dependent variables of the Boolean function $$ f: \left\{ {0, 1}… read more here.

Keywords: exact quantum; uncomplemented product; quantum algorithm; one uncomplemented ... See more keywords
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Variational quantum algorithm with information sharing

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Published in 2021 at "npj Quantum Information"

DOI: 10.1038/s41534-021-00452-9

Abstract: We introduce an optimisation method for variational quantum algorithms and experimentally demonstrate a 100-fold improvement in efficiency compared to naive implementations. The effectiveness of our approach is shown by obtaining multi-dimensional energy surfaces for small… read more here.

Keywords: algorithm information; quantum; information; quantum algorithm ... See more keywords
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Quantum algorithm for spectral projection by measuring an ancilla iteratively

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Published in 2020 at "Physical Review A"

DOI: 10.1103/physreva.101.032339

Abstract: We propose a quantum algorithm for projecting to eigenstates of any hermitian operator, provided one can access the associated control-unitary evolution and measurement of the ancilla of the control. The procedure is iterative and the… read more here.

Keywords: projection measuring; quantum algorithm; spectral projection; algorithm spectral ... See more keywords
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Variational quantum algorithm based on the minimum potential energy for solving the Poisson equation

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Published in 2021 at "Physical Review A"

DOI: 10.1103/physreva.104.052409

Abstract: Computer-aided engineering techniques are indispensable in modern engineering developments. In particular, partial differential equations are commonly used to simulate the dynamics of physical phenomena, but very large systems are often intractable within a reasonable computation… read more here.

Keywords: poisson equation; solving poisson; quantum algorithm; quantum ... See more keywords
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Quantum algorithm for support matrix machines

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Published in 2017 at "Physical Review A"

DOI: 10.1103/physreva.96.032301

Abstract: We propose a quantum algorithm for support matrix machines (SMMs) that efficiently addresses an image classification problem by introducing a least-squares reformulation. This algorithm consists of two core subroutines: a quantum matrix inversion (Harrow-Hassidim-Lloyd, HHL)… read more here.

Keywords: algorithm support; support matrix; quantum algorithm; matrix machines ... See more keywords
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Quantum algorithm for simulating the wave equation

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Published in 2019 at "Physical Review A"

DOI: 10.1103/physreva.99.012323

Abstract: We present a quantum algorithm for simulating the wave equation under Dirichlet and Neumann boundary conditions. The algorithm uses Hamiltonian simulation and quantum linear system algorithms as subroutines. It relies on factorizations of discretized Laplacian… read more here.

Keywords: simulating wave; quantum algorithm; wave equation; equation ... See more keywords
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Quantum algorithm for visual tracking

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Published in 2019 at "Physical Review A"

DOI: 10.1103/physreva.99.022301

Abstract: Visual tracking (VT) is the process of locating a moving object of interest in a video. It is a fundamental problem in computer vision, with various applications in human-computer interaction, security and surveillance, robot perception,… read more here.

Keywords: visual tracking; quantum algorithm; algorithm visual; computer ... See more keywords
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Quantum algorithm and quantum circuit for A-optimal projection: Dimensionality reduction

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Published in 2019 at "Physical Review A"

DOI: 10.1103/physreva.99.032311

Abstract: Learning low dimensional representation is a crucial issue for many machine learning tasks such as pattern recognition and image retrieval. In this article, we present a quantum algorithm and a quantum circuit to efficiently perform… read more here.

Keywords: quantum circuit; quantum algorithm; circuit; algorithm quantum ... See more keywords
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Operating Quantum States in Single Magnetic Molecules: Implementation of Grover's Quantum Algorithm.

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Published in 2017 at "Physical review letters"

DOI: 10.1103/physrevlett.119.187702

Abstract: Quantum algorithms use the principles of quantum mechanics, such as, for example, quantum superposition, in order to solve particular problems outperforming standard computation. They are developed for cryptography, searching, optimization, simulation, and solving large systems… read more here.

Keywords: quantum; grover quantum; operating quantum; quantum algorithm ... See more keywords