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Quantum Chaos is Quantum [PDF]
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
Degree of Quantumness in Quantum Synchronization [PDF]
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
On quantum averaging, quantum KAM, and quantum diffusion [PDF]
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Anatoly Neishtadt+3 more
openaire +4 more sources
Quantumness of quantum channels [PDF]
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]
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
Acknowledgement to Reviewers of Quantum Beam Science in 2019
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 ESPRESSO: a modular and open-source software project for quantum simulations of materials [PDF]
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
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
Teaching and Learning Optics in High School: From Fermat to Feynman
In this article, we analyze the basis of a proposal that allows teaching the notions of reflection, refraction, interference and diffraction from a unified perspective, using Fermat’s variational principle, recovered by Richard Feynman in his formulation
Maria Rita Otero, Marcelo Fabian Arlego
doaj +1 more source
Quantum Computation and Quantum Information [PDF]
Quantum computation and quantum information are of great current interest in computer science, mathematics, physical sciences and engineering. They will likely lead to a new wave of technological innovations in communication, computation and cryptography.
Yazhen Wang
semanticscholar +1 more source