0000000000083698

AUTHOR

M. C. Bañuls

showing 5 related works from this author

Simulation of many-qubit quantum computation with matrix product states

2006

Matrix product states provide a natural entanglement basis to represent a quantum register and operate quantum gates on it. This scheme can be materialized to simulate a quantum adiabatic algorithm solving hard instances of a NP-Complete problem. Errors inherent to truncations of the exact action of interacting gates are controlled by the size of the matrices in the representation. The property of finding the right solution for an instance and the expected value of the energy are found to be remarkably robust against these errors. As a symbolic example, we simulate the algorithm solving a 100-qubit hard instance, that is, finding the correct product state out of ~ 10^30 possibilities. Accum…

PhysicsQuantum PhysicsQuantum networkQuantum registerFOS: Physical sciencesComputational Physics (physics.comp-ph)Adiabatic quantum computationAtomic and Molecular Physics and OpticsPartícules (Física nuclear)Condensed Matter - Other Condensed MatterQuantum gateQuantum error correctionQubitQuantum mechanicsQuantum algorithmStatistical physicsCamps Teoria quàntica deQuantum Physics (quant-ph)Physics - Computational PhysicsOther Condensed Matter (cond-mat.other)Quantum computer
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CP and T violation in neutrino oscillations

2000

The conditions to induce appreciable CP-and T-odd effects in neutrino oscillations are discussed. The propagation in matter leads to fake CP-and CPT-odd asymmetries, besides a Bohm-Aharonov type modification of the interference pattern. We study the separation of fake and genuine CP violation by means of energy and distance dependence.

PhysicsHigh Energy Physics - PhenomenologyNuclear and High Energy PhysicsParticle physicsHigh Energy Physics - Phenomenology (hep-ph)FísicaCP violationFOS: Physical sciencesHigh Energy Physics::ExperimentNeutrino oscillationAtomic and Molecular Physics and OpticsEnergy (signal processing)
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Electromagnetic decays of heavy baryons

1999

9 páginas, 3 figuras, 7 tablas.-- PACS number(s): 12.39.Fe, 12.39.Hg, 13.40.Hq, 14.20.Lq

PhysicsNuclear and High Energy PhysicsParticle physicsChiral perturbation theoryMesonHigh Energy Physics::LatticeAstrophysics::High Energy Astrophysical PhenomenaHadronHigh Energy Physics::PhenomenologyFOS: Physical sciencesOrder (ring theory)FísicaBaryonPseudoscalarCharmed baryonsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Ground state
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Magnetic moments of heavy baryons

2000

6 páginas, 2 figuras, 4 tablas.-- PACS number(s): 12.39.Fe, 12.39.Hg, 14.20.Lq, 14.20.Mr

PhysicsQuarkNuclear and High Energy PhysicsParticle physicsChiral perturbation theoryMagnetic momentHigh Energy Physics::LatticeHadronNuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesPartícules (Física nuclear)BaryonCharmed baryonsRenormalizationHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Order (group theory)Nuclear Experiment
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Quantum walk with a time-dependent coin

2006

We introduce quantum walks with a time-dependent coin, and show how they include, as a particular case, the generalized quantum walk recently studied by Wojcik et al. {[}Phys. Rev. Lett. \textbf{93}, 180601(2004){]} which exhibits interesting dynamical localization and quasiperiodic dynamics. Our proposal allows for a much easier implementation of this particular rich dynamics than the original one. Moreover, it allows for an additional control on the walk, which can be used to compensate for phases appearing due to external interactions. To illustrate its feasibility, we discuss an example using an optical cavity. We also derive an approximated solution in the continuous limit (long--wavel…

PhysicsQuantum PhysicsProcess (computing)FOS: Physical sciencesAtomic and Molecular Physics and OpticsÒptica quànticalaw.inventionClassical mechanicslawOptical cavityQuasiperiodic functionQuantum walkCamps Teoria quàntica deLimit (mathematics)Quantum Physics (quant-ph)Quantum computerPhysical Review A
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