Search results for "MIXED-STATE"

showing 2 items of 2 documents

Entanglement in continuous-variable systems: recent advances and current perspectives

2007

We review the theory of continuous-variable entanglement with special emphasis on foundational aspects, conceptual structures, and mathematical methods. Much attention is devoted to the discussion of separability criteria and entanglement properties of Gaussian states, for their great practical relevance in applications to quantum optics and quantum information, as well as for the very clean framework that they allow for the study of the structure of nonlocal correlations. We give a self-contained introduction to phase-space and symplectic methods in the study of Gaussian states of infinite-dimensional bosonic systems. We review the most important results on the separability and distillabil…

High Energy Physics - TheoryStatistics and ProbabilityINFORMATIONField (physics)Computer scienceGaussianStructure (category theory)FOS: Physical sciencesGeneral Physics and AstronomyQuantum entanglementMultipartite entanglementUnitary statesymbols.namesakeRADIATION-FIELDSEPARABILITY CRITERIONStatistical physicsQuantum informationNORMAL FORMSCondensed Matter - Statistical MechanicsMathematical PhysicsQuantum opticsQuantum PhysicsStatistical Mechanics (cond-mat.stat-mech)ERROR-CORRECTIONENTROPYStatistical and Nonlinear PhysicsQUANTUM TELEPORTATION NETWORK MIXED-STATE ENTANGLEMENT GAUSSIAN STATES SEPARABILITY CRITERION ERROR-CORRECTION RADIATION-FIELD NORMAL FORMS INEQUALITIES INFORMATION ENTROPYMathematical Physics (math-ph)Quantum PhysicsMIXED-STATE ENTANGLEMENTGAUSSIAN STATESHigh Energy Physics - Theory (hep-th)QUANTUM TELEPORTATION NETWORKModeling and SimulationINEQUALITIESsymbolsQuantum Physics (quant-ph)Physics - OpticsOptics (physics.optics)
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Microwave surface resistance of pristine and neutron-irradiated MgB2 samples in magnetic field

2008

We report on the microwave surface resistance of two polycrystalline Mg11B2 samples; one consists of pristine material, the other has been irradiated at very high neutron fluence. It has already been reported that in the strongly irradiated sample the two gaps merge into a single value. The mw surface resistance has been measured in the linear regime as a function of the temperature and the DC magnetic field, at increasing and decreasing fields. The results obtained in the strongly irradiated sample are quite well justified in the framework of a generalized Coffey and Clem model, in which we take into account the field distribution inside the sample due to the critical state. The results ob…

SuperconductivityMaterials scienceCondensed matter physicsFluxonCondensed Matter - SuperconductivityMIXED-STATECRITICAL-STATEFOS: Physical sciencesII SUPERCONDUCTORSCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsMagnetic fieldSuperconductivity (cond-mat.supr-con)Superconductivity microwave surface resistance mgb2POINT-CONTACT SPECTROSCOPYNeutron fluxNeutronSINGLE-CRYSTALSIrradiationAnisotropySheet resistance
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