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Международный научно-исследовательский журнал

Влияние внешнего пространственно неоднородного электрического поля на восстановление фазовой памяти трехуровневой системы в случае формировании стимулированного фотонного эха

Э. И. Низамова, L. A. Nefedev, Guzel I. Garnaeva, А. Р. Сахбиева, É. I. Khakimzyanova, Е. Н. Ахмедшина

Published Jan 1, 2013• 0 citations
OpenAlex

Abstract

In this paper the conditions for the restoration of phase memory of the three-level system in the presence of external spatially inhomogeneous electric fields in the case of the formation of the stimulated photon echo investigated.

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L. A. Nefedev, Guzel I. Garnaeva, É. I. Khakimzyanova

The reproducibility of the information in the responses stimulated photon echo in a three-level system in the presence of external spatially inhomogeneous electric fields examined. The conditions of the best reproduction of the information and stimulated photon echo locking was found.

Естественные и математические науки в современном мире•Jan 1, 2013•0 citations

Корреляция неоднородного уширения и запирание откликов стимулированного фотонного эха в трехуровневой резонансной среде

L. A. Nefedev, Э. И. Низамова

The correlation of inhomogeneous broadening and the efficiency of locking of stimulated photon echo signals in the three-level resonance medium is investigated. It is shown, that relative intensity of the photon echo signals essentially depends on the size of factor of inhomogeneous broadening correlation on different frequency transitions.

Филология и культура•Jan 1, 2007•0 citations

Phase memory of the three-level system in the presence of external spatially inhomogeneous electric fields

Э. И. Низамова, Leonid A. Nefediev, G.A. Gilmanova

The increasing interest in the study of the interaction of several resonant fields with multilevel quantum systems is due to a wide range of possible applications of various effects observed in the multi-frequency excitation of quantum objects. Among them, we can note color echo holography, information compression in three-level environments, copying of quantum information, and multi-level quantum gates that perform logical operations. In addition, the recording and reproduction of echo holograms in multi-level systems leads to the possibility, along with logical operations, to perform a change in the real-time scale and the sequence of events in the echo-hologram response, the data on which were embedded into the temporal structure of the object laser pulse. The formation of optical transient processes in multilevel systems occurs when the short laser pulses separated in time and resonant of different frequency transitions at the substance have an effect on the system, so that their interaction with each other becomes possible only through the medium and only if the medium has a sufficiently long phase memory. In this situation, each laser pulse transmits information about its wave characteristics to the medium, and this information is retained here until the arrival of the next laser pulses. The formation of optical transient processes in a multilevel system in a solid depends essentially on the degree of correlation of the inhomogeneous broadening on different frequency transitions and different time intervals, in connection with the possible destruction of the reversible phase memory of the system due to a partial mutual fixation energies of transitions. The influence of external spatially inhomogeneous electric fields on the resonant medium can lead to an additional artificially created inhomogeneous broadening. In this case, it is possible to control the phase memory of the system by changing the parameters of external spatially inhomogeneous electric fields, and the most pronounced effect on phase memory is the case of laser excitation of narrow frequency regions of inhomogeneously broadened lines of the resonance transitions. Moreover, the artificially created inhomogeneous broadening by external spatially inhomogeneous electric fields due to the Stark effect can be comparable with the spread of frequencies due to a partial mutual fixation of the transition energies, which leads to a partial restoration of the coherence of the multilevel system. This effect can lead to an increase in the intensity of the response of the stimulated photon echo (SPE) in the three-level system, which is the opposite effect of photon echo locking.

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Formation of Stimulated Photon Echo in Three-Level Systems and Recovery of Phase Memory by External Spatially Inhomogeneous Electric Fields

Leonid A. Nefediev, Э. И. Низамова

Journal of Applied Spectroscopy•Sep 1, 2014•0 citations

Frequency–time correlation of inhomogeneous broadening in a three-level system and the stimulated photon echo locking effect

L. A. Nefedev, Э. И. Низамова, Guzel I. Garnaeva

The frequency–time correlation of inhomogeneous broadening on different transitions in a threelevel resonant medium in the presence of external spatially nonuniform electric fields is considered. It is shown that, under a certain relationship between the magnitudes of gradients of external nonuniform electric fields acting at different moments of time, it is possible to control the magnitude of the frequency–time correlation on different frequency transitions. An increase in the frequency–time correlation coefficient with certain strengths of external spatially nonuniform electric fields leads to the recovery of the phase memory of the system and an increase in the stimulated photon echo intensity.

Optics and Spectroscopy•Jul 1, 2016•0 citations

Управление логическими операциями с изображениями в аккумулированной эхо-голографии внешними пространственно-неоднородными электрическими полями

Guzel I. Garnaeva, L. A. Nefedev, Э. И. Низамова

Ihe realization of logical operations for images using an accumulated echo hologram in the presence of external spatially inhomogeneous electric fields is considered. It is shown that the photon echo locking effect allows controlling the type of logical operations (from uniting the sets to their symmetric difference and superposition) by varying the values of gradients of external spatially inhomogeneous electric fields.

Журнал прикладной спектроскопии•May 29, 2021•0 citations
The increasing interest in the study of the interaction of several resonant fields with multilevel quantum systems is due to a wide range of possible applications of various effects observed in the multi-frequency excitation of quantum objects. Among them, we can note color echo holography, information compression in three-level environments, copying of quantum information, and multi-level quantum gates that perform logical operations. In addition, the recording and reproduction of echo holograms in multi-level systems leads to the possibility, along with logical operations, to perform a change in the real-time scale and the sequence of events in the echo-hologram response, the data on which were embedded into the temporal structure of the object laser pulse. The formation of optical transient processes in multilevel systems occurs when the short laser pulses separated in time and resonant of different frequency transitions at the substance have an effect on the system, so that their interaction with each other becomes possible only through the medium and only if the medium has a sufficiently long phase memory. In this situation, each laser pulse transmits information about its wave characteristics to the medium, and this information is retained here until the arrival of the next laser pulses. The formation of optical transient processes in a multilevel system in a solid depends essentially on the degree of correlation of the inhomogeneous broadening on different frequency transitions and different time intervals, in connection with the possible destruction of the reversible phase memory of the system due to a partial mutual fixation energies of transitions. The influence of external spatially inhomogeneous electric fields on the resonant medium can lead to an additional artificially created inhomogeneous broadening. In this case, it is possible to control the phase memory of the system by changing the parameters of external spatially inhomogeneous electric fields, and the most pronounced effect on phase memory is the case of laser excitation of narrow frequency regions of inhomogeneously broadened lines of the resonance transitions. Moreover, the artificially created inhomogeneous broadening by external spatially inhomogeneous electric fields due to the Stark effect can be comparable with the spread of frequencies due to a partial mutual fixation of the transition energies, which leads to a partial restoration of the coherence of the multilevel system. This effect can lead to an increase in the intensity of the response of the stimulated photon echo (SPE) in the three-level system, which is the opposite effect of photon echo locking.
The frequency–time correlation of inhomogeneous broadening on different transitions in a threelevel resonant medium in the presence of external spatially nonuniform electric fields is considered. It is shown that, under a certain relationship between the magnitudes of gradients of external nonuniform electric fields acting at different moments of time, it is possible to control the magnitude of the frequency–time correlation on different frequency transitions. An increase in the frequency–time correlation coefficient with certain strengths of external spatially nonuniform electric fields leads to the recovery of the phase memory of the system and an increase in the stimulated photon echo intensity.