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Signatures of the ultrastrong light-matter coupling regime

机译：超强光-质耦合机制的特征

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摘要

In a microcavity, light-matter coupling is quantified by the vacuum-Rabi frequency Ω_R. When Ω_R is larger than radiative and nonradiative loss rates, the system eigenstates (polaritons) are linear superposition of photonic and electronic excitations, a condition actively investigated in diverse physical implementations. Recently, a quantum electrodynamic regime (ultrastrong coupling) was predicted when Ω_R becomes comparable to the transition frequency. Here we report signatures of this regime in a quantum-well intersubband micro-cavity. Measuring the cavity-polariton dispersion in a room-temperature linear optical experiment, we directly observe the antiresonant light-matter coupling and the photon-energy renormaiization of the vacuum field.
机译：在微腔中，光-质耦合由真空-拉比频率Ω_R量化。当Ω_R大于辐射损耗和非辐射损耗率时，系统本征态（极化子）是光子和电子激发的线性叠加，这是在各种物理实现中积极研究的条件。最近，当Ω_R变得与跃迁频率相当时，就预测出了一种量子电动力学机制（超强耦合）。在这里，我们在量子阱子带间微腔中报告该机制的特征。在室温线性光学实验中测量腔-极化子的色散，我们直接观察了真空场的反共振光-质耦合和光子能量的再规范化。

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  • 来源
    《Physical review》 |2009年第20期|201303.1-201303.4|共4页
  • 作者

    Aji A. Anappara; Simone De Liberate; Alessandro Tredicucci; Cristiano Ciuti; Giorgio Biasiol; Lucia Sorha; Fabio Beltram;

  • 作者单位

    NEST CNR-INFM and Scuola Nonnale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy;

    Laboratoire Materiaux et Phenomenes Quantiques, Universite Paris Diderot-Paris 7 and CNRS, UMR 7162, 75013 Paris, France Laboratoire Materiaux et Phenomenes Quantiques, Universite Paris Diderot-Paris 7 and CNRS, UMR 7162, 75013 Paris, France;

    NEST CNR-INFM and Scuola Nonnale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy;

    Laboratoire Materiaux et Phenomenes Quantiques, Universite Paris Diderot-Paris 7 and CNRS, UMR 7162, 75013 Paris, France;

    Laboratorio Nazionale TASC, CNR-INFM, Area Science Park, SS 14 Km 163.5. Basovizza, I-34012 Trieste, Italy;

    NEST CNR-INFM and Scuola Nonnale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy;

    NEST CNR-INFM and Scuola Nonnale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy;

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  • 正文语种 eng
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  • 关键词

    quantum wells; quantum wells; polaritons (including photon-phonon and photon-magnon interactions); cavity quantum electrodynamics; micromasers;

    机译：量子阱量子阱极化子（包括光子-声子和光子-磁子相互作用）;腔量子电动力学微型激光器;

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