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Quantum Chaos is Quantum [PDF]

open access: yesQuantum, 2021
It is well known that a quantum circuit onNqubits composed of Clifford gates with the addition ofknon Clifford gates can be simulated on a classical computer by an algorithm scaling aspoly(N)exp⁡(k)\cite{bravyi2016improved}. We show that, for a quantum circuit to simulate quantum chaotic behavior, it is both necessary and sufficient thatk=Θ(N).
Alioscia Hamma   +4 more
openaire   +6 more sources

On quantum averaging, quantum KAM, and quantum diffusion [PDF]

open access: yesRussian Mathematical Surveys, 2013
15 ...
Anatoly Neishtadt   +3 more
openaire   +4 more sources

Degree of Quantumness in Quantum Synchronization [PDF]

open access: yesScientific Reports, 2019
AbstractWe introduce the concept of degree of quantumness in quantum synchronization, a measure of the quantum nature of synchronization in quantum systems. Following techniques from quantum information, we propose the number of non-commuting observables that synchronize as a measure of quantumness.
D. Z. Rossatto   +8 more
openaire   +8 more sources

The Fundamental Nature of Motives

open access: yesFrontiers in Neuroscience, 2022
Decision-making is described as a natural process, one among others, consuming free energy in the least time. The thermodynamic tenet explains why data associated with decisions display the same patterns as any other data: skewed distributions, sigmoidal
Arto Annila
doaj   +1 more source

Quantumness of quantum channels [PDF]

open access: yesPhysical Review A, 2018
Quantum coherence is a fundamental aspect of quantum physics and plays a central role in quantum information science. This essential property of the quantum states could be fragile under the influence of the quantum operations. The extent to which quantum coherence is diminished depends both on the channel and the incoherent basis.
Seyed Javad Akhtarshenas   +1 more
openaire   +3 more sources

Quantum computing for quantum tunneling [PDF]

open access: yesPhysical Review D, 2021
We demonstrate how quantum field theory problems can be embedded on quantum annealers. The general method we use is a discretisation of the field theory problem into a general Ising model, with the continuous field values being encoded into Ising spin chains.
Steven Abel   +2 more
openaire   +4 more sources

Advanced capabilities for materials modelling with Quantum ESPRESSO [PDF]

open access: yesJournal of Physics: Condensed Matter, 2017
Quantum ESPRESSO is an integrated suite of open-source computer codes for quantum simulations of materials using state-of-the-art electronic-structure techniques, based on density-functional theory, density-functional perturbation theory, and many-body ...
P. Giannozzi   +49 more
semanticscholar   +1 more source

Acknowledgement to Reviewers of Quantum Beam Science in 2019

open access: yesQuantum Beam Science, 2020
The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not [...]
Quantum Beam Science Editorial Office
doaj   +1 more source

Spectral Emission Dependence of Tin‐Vacancy Centers in Diamond from Thermal Processing and Chemical Functionalization

open access: yesAdvanced Photonics Research, 2022
A systematic photoluminescence (PL) investigation of the spectral emission properties of individual optical defects fabricated in diamond upon ion implantation and annealing is reported.
Emilio Corte   +11 more
doaj   +1 more source

QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials [PDF]

open access: yesJournal of Physics: Condensed Matter, 2009
QUANTUM ESPRESSO is an integrated suite of computer codes for electronic-structure calculations and materials modeling, based on density-functional theory, plane waves, and pseudopotentials (norm-conserving, ultrasoft, and projector-augmented wave).
P. Giannozzi   +32 more
semanticscholar   +1 more source

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