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Quantum irreversible decoherence behaviour in open quantum systems with few degrees of freedom: Application to 1H NMR reversion experiments in nematic liquid crystals
(American Institute of Physics, 2013-10)
An experimental study of NMR spin decoherence in nematic liquid crystals is presented. Decoherence dynamics can be put in evidence by means of refocusing experiments of the dipolar interactions. The experimental technique ...
Quantum theory of spin waves in finite chiral spin chains
(American Physical Society, 2014)
We calculate the effect of spin waves on the properties of finite-size spin chains with a chiral spin ground
state observed on biatomic Fe chains deposited on iridium(001). The system is described with a Heisenberg
model ...
Entanglement and coherence in a spin-s XXZ system under non-uniform fields
(IOP Publishing, 2017-04)
We investigate entanglement and coherence in an XXZ spin s pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic ...
Spin-spin indirect interaction at low-energy excitation in zero-dimensional cavities
(IOP Publishing, 2011-05)
We solve the low-energy part of the spectrum of a model that describes a circularly polarized cavity mode strongly coupled to two exciton modes, each of which is coupled to a localized spin of arbitrary magnitude. In the ...
NUCLEAR SPIN 3/2 ELECTRIC QUADRUPOLE RELAXATION AS A QUANTUM COMPUTATION PROCESS
(RINTON PRESS, INC, 2010)
In this work we applied a quantum circuit treatment to describe the nuclear spin relaxation. From the Redfield theory, we obtain a description of the quadrupolar relaxation as a computational process in a spin 3/2 system, ...
Quantum properties in transport through nanoscopic rings: Charge-spin separation and interference effects
(World Scientific, 2010-10)
Many of the most intriguing quantum effects are observed or could be measured in transport experiments through nanoscopic systems such as quantum dots, wires and rings formed by large molecules or arrays of quantum dots. ...