Tune-out and magic wavelengths for ground-state ²³Na⁴⁰K molecules

2019/12/31 by Roman Bause, Ming Li, Andreas Schindewolf +5 · 1 citation
Physics and Astronomy · #cond-mat.quant-gas #physics.atom-ph

paper · pdf · doi:10.1103/physrevlett.125.023201

published as Phys. Rev. Lett. 125, 023201 (2020) · 11 pages, 10 figures

arxiv created 2020/06/24 · arxiv updated 2020/07/15

Abstract

We demonstrate a versatile, rotational-state dependent trapping scheme for the ground and first excited rotational states of ²³Na⁴⁰K molecules. Close to the rotational manifold of a narrow electronic transition, we determine tune-out frequencies where the polarizability of one state vanishes while the other remains finite, and a magic frequency where both states experience equal polarizability. The proximity of these frequencies of only 10 GHz allows for dynamic switching between different trap configurations in a single experiment, while still maintaining sufficiently low scattering rates.

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