198th RQC Seminar

  • 講演者

    Mr. Andrea Zappalà
    ( University of Messina, Italy )

  • 日程

    2025年5月23日(金) 16:00 - 17:00 (4:00 p.m. - 5:00 p.m.)

  • 開催場所

    ハイブリッド（ZOOM・ Wako Main Research 3F 345-347 Seminar Room / 研究本館3階 セミナー室 (345-347) (C01))

  • 講演タイトル

    From Few to Many Emitters Cavity QED : Energy Levels and Emission Spectra From Weak to Deep-Strong Coupling

  • お問合せ

    norilab_rqc_assist[at]ml.riken.jp

講演概要
I present a systematic study of the emission properties under incoherent excitation of systems composed by N two-level non-interacting quantum emitters coupled to a single cavity mode. We adopt a general theoretical framework for open cavity QED systems which is valid for any light-matter interaction regime and ensures gauge invariance for truncated Hilbert spaces. We have investigated the emission spectra under incoherent excitation of the two-level atoms, considering coupling strengths ranging from the weak coupling to the ultrastrong and deep-strong coupling regimes. We also studied the impact on the spectra of considering a collective reservoir, individual reservoirs, or their coexistence for the ensemble of emitters. These results also clarify how the system evolves towards a system of two single mode interacting bosonic fields with the increasing of the number N of emitters.

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