Results 31 to 40 of about 34,577 (263)

Recompilation-enhanced simulation of electron–phonon dynamics on IBM quantum computers

open access: yesNew Journal of Physics, 2022
Simulating quantum systems is believed to be one of the first applications for which quantum computers may demonstrate a useful advantage. For many problems in physics, we are interested in studying the evolution of the electron–phonon Hamiltonian, for ...
Benjamin Jaderberg   +3 more
doaj   +1 more source

Interfacing external quantum devices to a universal quantum computer. [PDF]

open access: yesPLoS ONE, 2011
We present a scheme to use external quantum devices using the universal quantum computer previously constructed. We thereby show how the universal quantum computer can utilize networked quantum information resources to carry out local computations.
Antonio A Lagana   +2 more
doaj   +1 more source

Quantum Algorithms for Estimating Quantum Entropies

open access: yesPhysical Review Applied, 2023
36 pages, 8 ...
Youle Wang, Benchi Zhao, Xin Wang
openaire   +2 more sources

Portfolios of Quantum Algorithms [PDF]

open access: yesPhysical Review Letters, 2001
Physical Review ...
S M, Maurer, T, Hogg, B A, Huberman
openaire   +2 more sources

Hybrid Quantum-Classical Eigensolver without Variation or Parametric Gates

open access: yesQuantum Reports, 2021
The use of near-term quantum devices that lack quantum error correction, for addressing quantum chemistry and physics problems, requires hybrid quantum-classical algorithms and techniques. Here, we present a process for obtaining the eigenenergy spectrum
Pejman Jouzdani, Stefan Bringuier
doaj   +1 more source

Quantum Effects in Algorithms [PDF]

open access: yes, 1999
We discuss some seemingly paradoxical yet valid effects of quantum physics in information processing. Firstly, we argue that the act of ``doing nothing'' on part of an entangled quantum system is a highly non-trivial operation and that it is the essential ingredient underlying the computational speedup in the known quantum algorithms. Secondly, we show
openaire   +2 more sources

Variational quantum generative modeling by sampling expectation values of tunable observables

open access: yesnpj Quantum Information
Expectation Value Samplers (EVSs) are quantum generative models that can learn high-dimensional continuous distributions by measuring the expectation values of parameterized quantum circuits. However, these models can demand impractical quantum resources
Kevin Shen   +5 more
doaj   +1 more source

Quantum algorithm for the multicollision problem [PDF]

open access: yesTheoretical Computer Science, 2020
23 pages, 2 figures and 2 tables; a significantly revised version of two conference papers (Asiacrypt 2017 [Cryptology ePrint Archive Report 2017/864] and PQCrypto 2019 [arXiv:1811.08097]) with additional time and space complexity analyses and ...
Akinori Hosoyamada   +3 more
openaire   +2 more sources

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

Exponential quantum advantages in learning quantum observables from classical data

open access: yesnpj Quantum Information
Quantum computers are believed to bring computational advantages in simulating quantum many-body systems. However, recent works have shown that classical machine learning algorithms are able to predict numerous properties of quantum systems with ...
Riccardo Molteni   +2 more
doaj   +1 more source

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