Superradiant Ensembles of Terahertz Polaritonic Meta-Atoms
We experimentally demonstrate the robustness of strong light-matter interaction in an ensemble of terahertz cavities with variable radiation loss. Each cavity in the form of a planar metallic resonator is strongly coupled to intersubband transitions of semiconductor quantum wells. The polariton spec...
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| Veröffentlicht in: | IEEE photonics journal 2020-10, Vol.12 (5), p.1-8 |
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| creator | Wenclawiak, Moritz Andrews, Aaron M. Strasser, Gottfried Unterrainer, Karl Darmo, Juraj |
| description | We experimentally demonstrate the robustness of strong light-matter interaction in an ensemble of terahertz cavities with variable radiation loss. Each cavity in the form of a planar metallic resonator is strongly coupled to intersubband transitions of semiconductor quantum wells. The polariton spectra, measured by time-domain spectroscopy, do not diminish when the cavity ensemble is brought to the superradiant regime with a radiative loss rate increased by a factor of three. In contrast, the splitting of the polariton frequencies gets larger, and indicates an increased vacuum Rabi frequency. We attribute the observed phenomenon to this well-known many-body effect in quantum electrodynamics, but here associated to an ensemble of otherwise independent polariton systems. |
| doi_str_mv | 10.1109/JPHOT.2020.3021464 |
| format | Article |
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| source | IEEE Open Access Journals; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Cavity resonators Couplings Intersubband transitions Licenses Loss measurement Metamaterials Polaritons Quantum electrodynamics Quantum wells Rabi frequency Resonant frequency Spectrum analysis strong light-matter interaction superradiance Temperature measurement terahertz Terahertz frequencies Time-domain analysis Time-domain-Spectroscopy |
| title | Superradiant Ensembles of Terahertz Polaritonic Meta-Atoms |
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