Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Optical Technology

Recording and reproducing information with various encoding schemes, using stimulated photon echo in a three-level system

Guzel I. Garnaeva, L. A. Nefedev, É. I. Khakimzyanova, T. R. Yahin

Published Jun 1, 2014• 1 citation
Publisher

Abstract

This paper discusses how external spatially inhomogeneous electric fields affect information reproduction in the stimulated-photon-echo response in a three-level system when the information is encoded in the temporal shape of the object pulse and in the time intervals of an echelon of laser pulses taken as the object pulse. The information-locking effect for various encoding schemes is investigated for various unequal spacings of the spectrum of a three-level system.

DOI
10.1364/jot.81.000303

Related papers

Information reproducibility in a stimulated photon-echo response at different orientations of external spatially inhomogeneous electric fields

Guzel I. Garnaeva, Leonid A. Nefediev, É. I. Khakimzyanova +1 more

We have studied the locking effect of photon-echo responses in a three-level system and the information reproducibility upon coding the information in the temporal shape of the object laser pulse. We have shown that these effects differ from their analogs in the two-level system.

Optics and Spectroscopy•Aug 1, 2014•4 citations

Optimum conditions for correlation of the temporal shape of an object pulse with a stimulated photon echo response in inhomogeneous external electric fields

Leonid A. Nefediev, É. I. Khakimzyanova, Guzel I. Garnaeva

We have studied the information locking effect and the effect of correlation of the shape of an object laser pulse with the shape of a stimulated photon echo response in the presence of external spatially inhomogeneous electric fields. We have shown that, for the transition 3 H 4 - 3 P 0 in a LaF 3 :Pr 3+ crystal, one can observe the effect of the correlation of the shape of an object laser pulse with the shape of a stimulated photon echo response and, depending on the scheme of the action of external spatially inhomogeneous electric fields, either the information locking effect or the information destroying effect.

Optics and Spectroscopy•Dec 1, 2013•1 citation

The optimal conditions for the correlation of object pulse temporary form with the stimulated photon echo response in the presence of external spatial inhomogeneous electric fields

Guzel I. Garnaeva, Leonid A. Nefediev, É. I. Khakimzyanova +1 more

The influence of external spatially inhomogeneous electric fields on the reproducibility of the information and effectiveness of stimulated photon echo responses locking at different encoding information in the object laser pulses are investigated. © 2014 Astro Ltd.

Laser Physics•Jul 4, 2014•0 citations

Формирование откликов стимулированного фотонного эха в трехуровневой системе при кодировке информации во временной форме объектного импульса

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

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.

•Mar 1, 2018•0 citations

How the information-flux density in stimulated photon echo depends on the statistical characteristics of the object laser pulse

А. Р. Сахбиева, L. A. Nefedev, Е. Н. Ахмедшина

This paper discusses how the statistical characteristics of an object laser pulse affect the efficiency with which the information encoded in its temporal shape is reproduced. The dependence of the information-flux density in stimulated photon echo on the area of the object pulse is determined in two-level and three-level systems.

Journal of Optical Technology•Feb 1, 2015•2 citations
This paper discusses how external spatially inhomogeneous electric fields affect information reproduction in the stimulated-photon-echo response in a three-level system when the information is encoded in the temporal shape of the object pulse and in the time intervals of an echelon of laser pulses taken as the object pulse. The information-locking effect for various encoding schemes is investigated for various unequal spacings of the spectrum of a three-level system.
We have studied the information locking effect and the effect of correlation of the shape of an object laser pulse with the shape of a stimulated photon echo response in the presence of external spatially inhomogeneous electric fields. We have shown that, for the transition 3 H 4 - 3 P 0 in a LaF 3 :Pr 3+ crystal, one can observe the effect of the correlation of the shape of an object laser pulse with the shape of a stimulated photon echo response and, depending on the scheme of the action of external spatially inhomogeneous electric fields, either the information locking effect or the information destroying effect.
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.