Results 1 to 10 of about 50 (50)
Quantum Chaos is Quantum [PDF]
Quantum, 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
Quantum computing for quantum tunneling [PDF]
Physical 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
Degree of Quantumness in Quantum Synchronization [PDF]
Scientific 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
On quantum averaging, quantum KAM, and quantum diffusion [PDF]
Russian Mathematical Surveys, 2013 15 ...
Anatoly Neishtadt +3 more
openaire +5 more sources
Quantumness of quantum channels [PDF]
Physical 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 channels in quantum gravity [PDF]
International Journal of Modern Physics D, 2014 The black hole final state proposal implements manifest unitarity in the process of black hole formation and evaporation in quantum gravity, by postulating a unique final state boundary condition at the singularity. We argue that this proposal can be embedded in the gauge/gravity context by invoking a path integral formalism inspired by the Schwinger ...
Rangamani, Mukund, Rota, Massimilliano
openaire +4 more sources
Quantum walks, quantum gates, and quantum computers [PDF]
Physical 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
Andrew P. Hines +2 more
openaire +2 more sources
Quantum curves as quantum distributions [PDF]
Journal of High Energy Physics, 2019 Abstract Topological strings on toric Calabi-Yau threefolds can be defined non-perturbatively in terms of a non-interacting Fermi gas of N particles. Using this approach, we propose a definition of quantum mirror curves as quantum distributions on phase space.
Mariño, Marcos, Zakany, Szabolcs
openaire +6 more sources
Quantum-Hall quantum bits [PDF]
Physical 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.
Allan H. MacDonald +4 more
openaire +3 more sources
Quantum Geometry and Quantum Gravity [PDF]
AIP Conference Proceedings, 2008 To appear in the AIP Conference Proceedings of the XVI International Fall Workshop on Geometry and Physics, Lisbon - Portugal, 5-8 September ...
J. Fernando Barbero G. +2 more
openaire +4 more sources