Información del autor
Autor Gonzalo Fonrodona, Isabel |
Documentos disponibles escritos por este autor (28)
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Porras, Miguel A. ; Gonzalo Fonrodona, Isabel ; Luis Aina, Alfredo | American Physical Society | 2016-04-07We show that quantum Zeno dynamics can be mimicked by the isolated evolution of an unobserved system in an effective potential. Monitoring frequently whether a particle remains in a region of space leads to the same wave-packet dynamics as placi[...]![]()
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Porras, Miguel A. ; Gonzalo Fonrodona, Isabel ; Mondello, Alessia | American Physical Society | 2003-06-17We study the group velocity of pulsed light beams in vacuum. Gouy's phase associated with the diffraction of transversally limited pulses can create a strong anomalous dispersion in vacuum leading to highly superluminal and negative group veloci[...]![]()
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Bargueño, Pedro ; Miret Artés, Salvador ; Gonzalo Fonrodona, Isabel | Royal Society of Chemistry | 2011In order to explore parity violating effects in chiral molecules, of interest in some models of evolution towards homochirality, quantum stochastic resonance (QSR) is studied for the population difference between the two enantiomers of a chiral [...]![]()
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Porras, Miguel A. ; Luis Aina, Alfredo ; Gonzalo Fonrodona, Isabel | American Physical Society | 2014Although the quantum Zeno effect takes its name from Zeno’s arrow paradox, the effect of frequently observing the position of a freely moving particle on its motion has not been analyzed in detail in the frame of standard quantum mechanics. We s[...]![]()
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Radiative corrections using third-order perturbation theory are considered in a theoretical calculation of the Zeeman effect. The corrections have been calculated for the states 2 3^P of helium, and found to be of the same order as other radiati[...]![]()
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Gonzalo Fonrodona, Isabel ; Antón Revilla, Miguel Ángel ; Carreño Sánchez, Fernando ; Gómez Calderón, Óscar | American Physical Society | 2005-09-13The squeezing spectrum of the fluorescent light is investigated for a laser-driven three-level atom of the Lambda configuration when quantum interference of the decay channels is accounted for. We show that when the two atomic transitions contri[...]![]()
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We study the tunnel dynamics of a chiral molecule between its left (L) and right (R) conformations, under the global effect of collisional decoherence together with the effect of a mean-field generated by the environment where an energetic diffe[...]![]()
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Carreño Sánchez, Fernando ; Gómez Calderón, Óscar ; Antón Revilla, Miguel Ángel ; Gonzalo Fonrodona, Isabel | American Physical Society | 2005-06-15We study the dispersion and absorption spectra of a weak probe in a Delta-type three-level atomic system with closely ground sublevels driven by a strong field and damped by a broadband squeezed vacuum. We analyze the interplay between the spont[...]![]()
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This work is the English translation of an extract of the pioneering research on brain dynamics by Justo Gonzalo (1910–1986). This is an article published in Spanish in the scientific journal ‘Trabajos del Instituto Cajal de Investigaciones Biol[...]![]()
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Transverse effects in the laser threshold, originated by electronic-vibrational coupling in the active centers, are analyzed theoretically by means of the semiclassical two-level Maxwell-Bloch equations. A single longitudinal mode is considered.[...]![]()
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Porras, Miguel A. ; Luis Aina, Alfredo ; Gonzalo Fonrodona, Isabel ; Sanz, Ángel S. | American Physical Society | 2011-11-14We analyze a simple and feasible practical scheme displaying Zeno, anti-Zeno, and inverse-Zeno effects in the observation of wave-packet spreading caused by free evolution. The scheme is valid both in spatial diffraction of classical optical wav[...]![]()
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Luis Aina, Alfredo ; Gonzalo Fonrodona, Isabel ; Porras, Miguel A. | American Physical Society | 2013-06-20We describe a version of the Zeno effect where the monitored physical property cannot be represented by a standard operator in the system space and the evolution to be prevented by observation is not unitary. This is the case of quantum-state pu[...]![]()
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We describe an experiment in which the rotation of the polarization of light propagating in an optically active water solution of D-fructose tends to be inhibited by frequent monitoring whether the polarization remains unchanged. This is an exam[...]