Buscar
Mostrando ítems 1-10 de 31
Transiently trapped entanglements in model polymer networks
(American Chemical Society, 2009-06)
The relaxational dynamics of trapped entanglements in model silicone polymer networks is studied through the residual dipolar couplings (RDC) obtained by double quantum nuclear magnetic resonance (DQ NMR). These experiments ...
DQ-DRENAR: a new NMR technique to measure site-resolved magnetic dipole-dipole interactions in multispin-1/2 systems: theory and validation on crystalline phosphates
(American Institute of Physics - AIPCollege Park, 2013)
A new solid state NMR technique is described for measuring homonuclear dipole-dipole interactions in multi-spin-1/2 systems under magic-angle spinning conditions. Re-coupling is accomplished in the form of an effective ...
Estados cuasi-invariantes como condición inicial de la dinámica de las coherencias en sistemas de espines nucleares con acople dipolar
(2017-03-31)
El estudio de la evolución de las coherencias es un tema que se ha vuelto relevante hace un tiempo. Aplicado a sólidos y a cristales líquidos (CL), el estudio de las coherencias brinda importante información a cerca de la ...
Clustering and decoherence of correlated spins under double quantum dynamics
(American Physical Society, 2014-10)
We present a new approach for the study of the evolution of spin correlations and decoherence in multiple quantum Nuclear Magnetic Resonance experiments. The infinite system, constituted by the protons of a polycrystalline ...
Observation of environment-induced double sudden transitions in geometric quantum correlations
(American Physical Society - APSCollege Park, 2013-12)
Correlations in quantum systems exhibit a rich phenomenology under the effect of various sources of noise. We investigate theoretically and experimentally the dynamics of quantum correlations and their classical counterparts ...
1H, 29Si and 119Sn double and triple resonance NMR spectroscopy of the small-pore framework sodium stannosilicate Na2SnSi3O9·2H2O
(2020-06-01)
The small-pore framework sodium stannosilicate AV-10, chemical composition Na2SnSi3O9·2H2O and known crystallographic structure, was synthesized by hydrothermal crystallization. This stannosilicate is built up of a ...
NMR dipolar constants of motion in liquid crystals: Jeener-Broekaert, double quantum coherence experiments and numerical calculation on a 10-spin cluster
(Elsevier, 2009-12)
Two proton quasi-equilibrium states were previously observed in nematic liquid crystals, namely the S and W quasi-invariants. Even though the experimental evidence suggested that they originate in a partition of the spin ...
Intermediate role of gallium in oxidic glasses: solid state NMR structural studies of the Ga2O3-NaPO3 system
(American Chemical Society - ACSWashington, DC, 2014-07)
A series of (NaPO3)1-x(Ga2O3)x glasses (0 ≤ x ≤ 0.35) prepared by conventional melt-quenching methods has been structurally characterized by various complementary high resolution one-dimensional and two-dimensional (2D) ...
Efectos dinámicos en la emisión óptica de sistemas cavidad-qubit en el régimen de acoplamiento ultrafuerte
(Bogotá - Ciencias - Maestría en Ciencias - FísicaDepartamento de FísicaUniversidad Nacional de Colombia - Sede Bogotá, 2020)
Recent experimental developments achieved in cavity-qubit systems in circuit quantum electrodynamics, open the door to enhance quantum properties for the implementation of new emerging quantum architectures. Among these ...
Cavity-spin-orbit competition in quantum dot systems under a magnetic field
(Universidad de los AndesMaestría en Ciencias - FísicaFacultad de CienciasDepartamento de Física, 2023-01-27)
In this work we accomplish a exhaustive study about few particle and many-body systems under a perpendicular magnetic field and spin-orbit coupling inside a quantum electrodynamics cavity, whose analysis has so far not ...