Results 11 to 20 of about 2,330,425 (363)

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).
Lorenzo Leone   +3 more
openaire   +5 more sources

Quantum-Hall quantum bits [PDF]

open access: yesPhysical Review B, 2002
Bilayer quantum-Hall systems can form collective states in which electrons exhibit spontaneous interlayer phase coherence. We discuss the possibility of using bilayer quantum dot many-electron states with this property to create two-level systems that have potential advantages as quantum bits.
Yang, S.-R. Eric   +2 more
openaire   +3 more sources

Quantum walks, quantum gates, and quantum computers [PDF]

open access: yesPhysical Review A, 2007
The physics of quantum walks on graphs is formulated in Hamiltonian language, both for simple quantum walks and for composite walks, where extra discrete degrees of freedom live at each node of the graph. It is shown how to map between quantum walk Hamiltonians and Hamiltonians for qubit systems and quantum circuits; this is done for both a single- and
Hines, Andrew P., Stamp, P. C. E.
openaire   +2 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

QUANTUM HOLONOMIES FOR QUANTUM COMPUTING [PDF]

open access: yesInternational Journal of Modern Physics B, 2001
Holonomic Quantum Computation (HQC) is an all-geometrical approach to quantum information processing. In the HQC strategy information is encoded in degenerate eigen-spaces of a parametric family of Hamiltonians. The computational network of unitary quantum gates is realized by driving adiabatically the Hamiltonian parameters along loops in a control ...
Pachos, Jiannis, Zanardi, Paolo
openaire   +3 more sources

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

Quantum Dissipation and Quantum Groups [PDF]

open access: yesAnnals of Physics, 1995
We discuss the r le of quantum deformation of Weyl-Heisenberg algebra in dissipative systems and finite temperature systems. We express the time evolution generator of the damped harmonic oscillator and the generator of thermal Bogolubov transformations in terms of operators of the quantum Weyl-Heisenberg algebra. The quantum parameter acts as a label
Iorio, Alfredo, Vitiello, Giuseppe
openaire   +3 more sources

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

A quantum–quantum Metropolis algorithm [PDF]

open access: yesProceedings of the National Academy of Sciences, 2012
The classical Metropolis sampling method is a cornerstone of many statistical modeling applications that range from physics, chemistry, and biology to economics. This method is particularly suitable for sampling the thermal distributions of classical systems. The challenge of extending this method to the simulation of arbitrary quantum systems is that,
Yung, Man-Hong, Aspuru-Guzik, Alan
openaire   +4 more sources

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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