Results 11 to 20 of about 3,277,735 (341)
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 ...
A. H. MacDonald +34 more
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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).
Lorenzo Leone +3 more
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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
Hines, Andrew P., Stamp, P. C. E.
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QUANTUM HOLONOMIES FOR QUANTUM COMPUTING [PDF]
International 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
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Quantum Dissipation and Quantum Groups [PDF]
Annals 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
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A quantum–quantum Metropolis algorithm [PDF]
Proceedings 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
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Quantum chaos in quantum wells [PDF]
Physica D: Nonlinear Phenomena, 1999 25 pages, 15 figures, accepted for publication in Physica ...
Narimanov, E. E., Stone, A. Douglas
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Quantum Oscillations without Quantum Coherence [PDF]
Physical Review Letters, 2003 We study numerically the damping of quantum oscillations and the increase of entropy with time in model spin systems decohered by a spin bath. In some experimentally relevant cases, the oscillations of considerable amplitude can persist long after the entropy has saturated near its maximum, i.e.
Dobrovitski, VV +3 more
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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
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Crystals, 2020 A modified facile method is presented to synthesise quantum-sized zinc oxide nanoparticles within the pores of a mesoporous silica host (SBA-11). This method eliminates the 3 h alcohol reflux and the basic solution reaction steps of zinc acetate.
Tariq Aqeel, Heather F. Greer
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