Results 31 to 40 of about 3,302 (256)

Quantum imaginary-time control for accelerating the ground-state preparation

open access: yesPhysical Review Research, 2023
Quantum computers have been widely speculated to offer significant advantages in obtaining the ground state of difficult Hamiltonian in chemistry and physics.
Yu-Cheng Chen   +4 more
doaj   +1 more source

Quantum generative adversarial imitation learning

open access: yesNew Journal of Physics, 2023
Investigating quantum advantage in the NISQ era is a challenging problem whereas quantum machine learning becomes the most promising application that can be resorted to.
Tailong Xiao   +4 more
doaj   +1 more source

A variational quantum algorithm for approximating convex roofs

open access: yesQuantum Information and Computation, 2022
Many entanglement measures are first defined for pure states of a bipartite Hilbert space, and then extended to mixed states via the convex roof extension. In this article we alter the convex roof extension of an entanglement measure, to produce a sequence of extensions that we call $f$-$d$ extensions, for $d \in \mathbb{N}$, where $f:[0,1]\to [0 ...
George Androulakis, Ryan McGaha
openaire   +2 more sources

Variational quantum eigensolver techniques for simulating carbon monoxide oxidation

open access: yesCommunications Physics, 2022
The variational quantum eigensolver is a quantum-classical algorithm used to solve optimisation problems in machine learning but demonstrates limitations when applied to simulations of large molecules.
Mariia D. Sapova, Aleksey K. Fedorov
doaj   +1 more source

Training variational quantum algorithms with random gate activation

open access: yesPhysical Review Research, 2023
Variational quantum algorithms (VQAs) hold great potential for near-term applications and are promising to achieve quantum advantage in practical tasks. However, VQAs suffer from severe barren plateau problems and have a significant probability of being ...
Shuo Liu   +3 more
doaj   +1 more source

A Comparative Study on Solving Optimization Problems With Exponentially Fewer Qubits

open access: yesIEEE Transactions on Quantum Engineering
Variational quantum optimization algorithms, such as the variational quantum eigensolver (VQE) or the quantum approximate optimization algorithm (QAOA), are among the most studied quantum algorithms.
David Winderl   +2 more
doaj   +1 more source

Variational quantum algorithms

open access: yes, 2022
Applications such as simulating complicated quantum systems or solving large-scale linear algebra problems are very challenging for classical computers, owing to the extremely high computational cost. Quantum computers promise a solution, although fault-tolerant quantum computers will probably not be available in the near future.
Cerezo, M   +10 more
openaire   +1 more source

Optimizing Variational Quantum Neural Networks Based on Collective Intelligence

open access: yesMathematics
Quantum machine learning stands out as one of the most promising applications of quantum computing, widely believed to possess potential quantum advantages.
Zitong Li   +4 more
doaj   +1 more source

Noise-assisted variational quantum thermalization

open access: yesScientific Reports, 2022
Preparing thermal states on a quantum computer can have a variety of applications, from simulating many-body quantum systems to training machine learning models.
Jonathan Foldager   +2 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

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