Effects of dispersion on squeezing and photon statistics of down-converted light

Yuta Takahashi, Jonas Söderholm, Keiichi Hirano, Naoto Namekata, Susumu Machida, Shigehiko Mori, Sunao Kurimura, Shinichi Komatsu, Shuichiro Inoue

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    The high peak intensity achieved with ultrashort pump pulses drastically increases the conversion efficiency in spontaneous parametric down-conversion. However, when ultrashort pulses are used, dispersion limits the degree of squeezing. Here, we investigate the effects of dispersion on both quadrature squeezing and photon statistics by varying the interaction length when pumping a periodically poled lithium niobate crystal with femtosecond pulses. The down-converted light in the 1550 nm telecom band attains its maximum observed squeezing level of 3.1 dB for the shortest interaction length. Our photon-statistics measurements agree with the photon-pair distribution going from thermal to Poissonian as the interaction length is increased. This is explained by considering the dispersion-induced distinguishability of the generated photon pairs.

    Original languageEnglish
    Article number043801
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume77
    Issue number4
    DOIs
    Publication statusPublished - 2008 Apr 1

    Fingerprint

    compressing
    statistics
    photons
    pulses
    interactions
    lithium niobates
    quadratures
    pumping
    pumps
    crystals

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Physics and Astronomy(all)

    Cite this

    Takahashi, Y., Söderholm, J., Hirano, K., Namekata, N., Machida, S., Mori, S., ... Inoue, S. (2008). Effects of dispersion on squeezing and photon statistics of down-converted light. Physical Review A - Atomic, Molecular, and Optical Physics, 77(4), [043801]. https://doi.org/10.1103/PhysRevA.77.043801

    Effects of dispersion on squeezing and photon statistics of down-converted light. / Takahashi, Yuta; Söderholm, Jonas; Hirano, Keiichi; Namekata, Naoto; Machida, Susumu; Mori, Shigehiko; Kurimura, Sunao; Komatsu, Shinichi; Inoue, Shuichiro.

    In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 77, No. 4, 043801, 01.04.2008.

    Research output: Contribution to journalArticle

    Takahashi, Y, Söderholm, J, Hirano, K, Namekata, N, Machida, S, Mori, S, Kurimura, S, Komatsu, S & Inoue, S 2008, 'Effects of dispersion on squeezing and photon statistics of down-converted light', Physical Review A - Atomic, Molecular, and Optical Physics, vol. 77, no. 4, 043801. https://doi.org/10.1103/PhysRevA.77.043801
    Takahashi, Yuta ; Söderholm, Jonas ; Hirano, Keiichi ; Namekata, Naoto ; Machida, Susumu ; Mori, Shigehiko ; Kurimura, Sunao ; Komatsu, Shinichi ; Inoue, Shuichiro. / Effects of dispersion on squeezing and photon statistics of down-converted light. In: Physical Review A - Atomic, Molecular, and Optical Physics. 2008 ; Vol. 77, No. 4.
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