SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 5: Quantum Optics: Open Quantum Systems
Q 5.4: Vortrag
Montag, 6. März 2023, 11:45–12:00, F342
Laser operation based on Floquet-assisted superradiance — •Lukas Broers1 and Ludwig Mathey1,2 — 1Zentrum für Optische Quantentechnologien and Institut für Laser-Physik, Universität Hamburg, 22761 Hamburg, Germany. — 2The Hamburg Center for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.
We demonstrate the feasibility of utilizing the non-equilibrium Floquet-assisted superradiant phase (FSP) in the dissipative Rabi-Dicke model for laser operation. We relate this phase to the population inversion of Floquet states of the driven two-level systems in the cavity. This inversion is depleted near Floquet energies that are resonant with the cavity frequency to sustain a coherent light-field. We show the robustness of this state against key imperfections. We consider the effect of a finite linewidth of the driving field and find that the linewidth of the light field in the cavity narrows drastically across the FSP transition, reminiscent of a line narrowing at the laser transition. We find that the FSP is robust against inhomogeneous broadening and that the depleted population inversion of near-resonant Floquet states leads to hole burning in the inhomogeneously broadened Floquet spectra. Finally, the FSP is robust against dissipation processes, with coefficients up to values that are experimentally available.
[1] L. Broers et al., Floquet engineering of non-equilibrium superradiance, arXiv:2203.07434 (2022)
[2] L. Broers et al., Laser operation based on Floquet-assisted superradiance, arXiv:2211.01320 (2022)