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arXiv · 2506.21202

Two-mode hyperradiant lasing in a system of two quantum dots embedded in a bimodal photonic crystal cavity

Lavakumar Addepalli·P. K. Pathak
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Abstract

We propose a scheme for two-mode hyperradiant lasing in a system comprising two incoherently pumped quantum dots (QDs) coupled to a bimodal photonic crystal cavity. To account for the exciton-phonon interactions, we employ a time-convolutionless polaron-transformed master equation. Both resonant and off-resonant couplings of the QDs to the cavity modes are considered, and we analyze the resulting radiance witness as well as the intra- and inter-mode photon correlations. Furthermore, we demonstrate that phonon-induced cooperative two-mode two-photon processes significantly enhance the radiance witness. This enhancement is quantified by evaluating the emission and absorption rates associated with both single-mode and two-mode two-photon transitions. Finally, we compare the radiance witness and emission spectral linewidths for QDs coupled to single-mode and bimodal cavities, revealing that an increase in radiance witness is accompanied by a narrowing of the emission linewidth.

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Lavakumar Addepalli, P. K. Pathak. 2025-06-26. Two-mode hyperradiant lasing in a system of two quantum dots embedded in a bimodal photonic crystal cavity. https://arxiv.org/abs/2506.21202

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