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    Pulse propagation, population transfer, and light storage in five-level media


    Grigoryan, G. and Chaltykyan, V. and Gazazyan, E. and Tikhova, O. and Paturyan, V. (2015) Pulse propagation, population transfer, and light storage in five-level media. Physical Review A, 91 (2). 023802. ISSN 1050-2947

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    Abstract

    We consider adiabatic interaction of five-level atomic systems and their media with four short laser pulses under the condition of all two-photon detunings being zero. We derive analytical expressions for eigenvalues of the system’s Hamiltonian and determine conditions of adiabaticity for both the atom and the medium.We analyze, in detail, the system’s behavior when the eigenvalue with nonvanishing energy is realized. As distinct from the usual dark state of a five-level system (corresponding to zero eigenvalue), which is a superposition of three states, in our case the superposition of four states does work. We demonstrate that this seemingly unfavorable case nevertheless completely imitates a three-level system not only for a single atom but also in the medium, since the propagation equations are also split into those for three- and two-level media separately. We show that, under certain conditions, all the coherent effects observed in three-level media, such as population transfer, light slowing, light storage, and so on, may efficiently be realized in five-level media. This has an important advantage that the light storage can be performed twice in the same medium; i.e., the second pulse can be stored without retrieving the first one, and then the two pulses can be retrieved in any desired sequence.

    Item Type: Article
    Additional Information: This article is available at Pulse propagation, population transfer, and light storage in five-level media G. Grigoryan, V. Chaltykyan, E. Gazazyan, O. Tikhova, and V. Paturyan Phys. Rev. A 91, 023802 (2015) DOI: 10.1103/PhysRevA.91.023802 ©2015 American Physical Society
    Keywords: Pulse propagation; population transfer; light storage; five-level media;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Item ID: 6073
    Identification Number: https://doi.org/10.1103/PhysRevA.91.023802
    Depositing User: Vanush Paturyan
    Date Deposited: 23 Apr 2015 15:07
    Journal or Publication Title: Physical Review A
    Publisher: American Physical Society
    Refereed: Yes
    URI:

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