Dressed-State Spectroscopy and Magic Trapping of Microwave-Shielded NaCs Molecules

• URL: http://arxiv.org/abs/2406.19308v1
• Date: Thu, 27 Jun 2024 16:31:22 GMT
• Title: Dressed-State Spectroscopy and Magic Trapping of Microwave-Shielded NaCs Molecules
• Authors: Siwei Zhang, Weijun Yuan, Niccolò Bigagli, Claire Warner, Ian Stevenson, Sebastian Will,
• Abstract summary: We report on the optical polarizability of microwave-shielded ultracold NaCs molecules in an optical dipole trap. For strong dressing fields, we find that a magic rotational transition can be engineered and demonstrate its insensitivity to laser intensity fluctuations.
• Score: 2.820929542705023
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report on the optical polarizability of microwave-shielded ultracold NaCs molecules in an optical dipole trap. While dressing a pair of rotational states with a microwave field, we observe a marked dependence of the optical polarizability on the intensity and detuning of the dressing field. To precisely characterize differential energy shifts between dressed rotational states, we establish dressed-state spectroscopy. For strong dressing fields, we find that a magic rotational transition can be engineered and demonstrate its insensitivity to laser intensity fluctuations. The results of this work have direct relevance for evaporative cooling and the recent demonstration of molecular Bose-Einstein condensates [Bigagli, et al., Nature (2024)] and may open a door to precision microwave spectroscopy in interacting many-body systems of microwave-shielded molecules.

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