2024/05/22 by Fulin Deng, Xing-Yan Chen, Deng, Fulin +9 · 1 citation
Chemistry · Engineering · #Advanced Polymer Synthesis and Characterization #FOS: Physical sciences #Fullerene Chemistry and Applications #Molecular Junctions and Nanostructures #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2405.13645
openalex publication_date 2024/05/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the static and dynamic properties of tetratomic molecules formed by two microwave-shielded polar molecules across field-linked resonances. In particular, we focus on two-body physics and experimental techniques unexplored in the recent experiment [X.-Y. Chen \it et al., Nature \bf626, 283 (2024)]. We show that, compared to the lowest tetramer state, higher tetramer states typically have longer lifetimes, which may facilitate a further cooling of tetramer gases towards quantum degeneracy. To detect tetramers, we identify the distinctive time-of-flight images from ramp dissociation, which can be observed by lowering the ramp rate of the microwave. Remarkably, in the modulational dissociation of tetramers, we find that multi-photon processes induce dissociation even below the threshold modulation frequency when the modulation amplitude is sufficiently high. Given the universal form of the inter-molecular potential for microwave-shielded polar molecules, our results also apply to other molecular gases widely explored in recent experiments.