Results 21 to 30 of about 3,302 (256)
Coherence and Entanglement Dynamics in Training Variational Quantum Perceptron
Entropy, 2020 In quantum computation, what contributes supremacy of quantum computation? One of the candidates is known to be a quantum coherence because it is a resource used in the various quantum algorithms.
Min Namkung, Younghun Kwon
doaj +1 more source
A Variational Algorithm for Quantum Neural Networks [PDF]
, 2020 Quantum Computing leverages the laws of quantum mechanics to build computers endowed with tremendous computing power. The field is attracting ever-increasing attention from both academic and private sectors, as testified by the recent demonstration of quantum supremacy in practice.
Macaluso, Antonio +3 more
openaire +2 more sources
Time evolution of uniform sequential circuits
Physical Review Research, 2023 Simulating time evolution of generic quantum many-body systems using classical numerical approaches has an exponentially growing cost either with evolution time or with the system size.
Nikita Astrakhantsev +3 more
doaj +1 more source
Accelerating variational quantum algorithms with multiple quantum processors
CoRR, 2021 Variational quantum algorithms (VQAs) have the potential of utilizing near-term quantum machines to gain certain computational advantages over classical methods. Nevertheless, modern VQAs suffer from cumbersome computational overhead, hampered by the tradition of employing a solitary quantum processor to handle large-volume data.
Yuxuan Du, Yang Qian, Dacheng Tao
openaire +2 more sources
Variational quantum algorithms for dimensionality reduction and classification [PDF]
Physical Review A, 2020 In this work, we present a quantum neighborhood preserving embedding and a quantum local discriminant embedding for dimensionality reduction and classification. We demonstrate that these two algorithms have an exponential speedup over their respectively classical counterparts.
Jin-Min Liang +3 more
openaire +2 more sources
Simultaneous Perturbation Stochastic Approximation of the Quantum Fisher Information [PDF]
Quantum, 2021 The Quantum Fisher Information matrix (QFIM) is a central metric in promising algorithms, such as Quantum Natural Gradient Descent and Variational Quantum Imaginary Time Evolution.
Julien Gacon +3 more
doaj +1 more source
Simulating a ring-like Hubbard system with a quantum computer
Physical Review Research, 2022 We develop a workflow to use current quantum computing hardware for solving quantum many-body problems, using the example of the fermionic Hubbard model.
Philippe Suchsland +4 more
doaj +1 more source
Subspace-search variational quantum eigensolver for excited states
Physical Review Research, 2019 The variational quantum eigensolver (VQE), a variational algorithm to obtain an approximated ground state of a given Hamiltonian, is an appealing application of near-term quantum computers.
Ken M. Nakanishi +2 more
doaj +1 more source
Low-Rank Variational Quantum Algorithm for the Dynamics of Open Quantum Systems [PDF]
QuantumThe simulation of many-body open quantum systems is key to solving numerous outstanding problems in physics, chemistry, material science, and in the development of quantum technologies. Near-term quantum computers may bring considerable advantage for the
Sara Santos, Xinyu Song, Vincenzo Savona
doaj +1 more source
Variational quantum simulation of ultrastrong light-matter coupling
Physical Review Research, 2020 We propose the simulation of quantum-optical systems in the ultrastrong-coupling regime using a variational quantum algorithm. More precisely, we introduce a short-depth variational form to prepare the ground state of the multimode Dicke model on a ...
Agustin Di Paolo +3 more
doaj +1 more source