Creating single collective atomic excitations via spontaneous Raman emission in inhomogeneously broadened systems: Beyond the adiabatic approximation

Carlo Ottaviani, Christoph Simon, Hugues De Riedmatten, Mikael Afzelius, Björn Lauritzen, Nicolas Sangouard, Nicolas Gisin

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    Abstract

    The creation of single collective excitations in atomic ensembles via spontaneous Raman emission plays a key role in several quantum communication protocols, starting with the seminal Duan-Lukin-Cirac-Zoller protocol. This process is usually analyzed theoretically under the assumptions that the write laser pulse inducing the Raman transition is far off resonance and that the atomic ensemble is only homogeneously broadened. Here we study the impact of near-resonance excitation for inhomogeneously broadened ensembles on the collective character of the created atomic excitation. Our results are particularly relevant for experiments with hot atomic gases and for potential future solid-state implementations. © 2009 The American Physical Society.
    Original languageEnglish
    Article number063828
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume79
    Issue number6
    DOIs
    Publication statusPublished - 19 Jun 2009

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    Ottaviani, C., Simon, C., De Riedmatten, H., Afzelius, M., Lauritzen, B., Sangouard, N., & Gisin, N. (2009). Creating single collective atomic excitations via spontaneous Raman emission in inhomogeneously broadened systems: Beyond the adiabatic approximation. Physical Review A - Atomic, Molecular, and Optical Physics, 79(6), [063828]. https://doi.org/10.1103/PhysRevA.79.063828