Probing dipolar interactions between Rydberg atoms and ultracold polar molecules

• URL: http://arxiv.org/abs/2504.06977v1
• Date: Wed, 09 Apr 2025 15:31:02 GMT
• Title: Probing dipolar interactions between Rydberg atoms and ultracold polar molecules
• Authors: Lingbang Zhu, Jeshurun Luke, Roy Shaham, Yi-Xiang Liu, Kang-Kuen Ni,
• Abstract summary: We probe resonant dipolar interactions between ultracold $40$K$87$Rb molecules and Rydberg $87$Rb atoms in an optically trapped ensemble.<n>We observe resonant energy transfer at 2.227 GHz from Rydberg atoms to molecules under a tunable external electric field.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We probe resonant dipolar interactions between ultracold $^{40}$K$^{87}$Rb molecules and Rydberg $^{87}$Rb atoms in an optically trapped ensemble. Through state-selective ionization detection of the KRb molecules, we observe resonant energy transfer at 2.227 GHz from Rydberg atoms to molecules under a tunable external electric field. We measure a broadening up to 3.5 MHz, for the Rb Rydberg excitation spectrum, which matches a Monte Carlo simulation that describes a Rydberg atom and neighboring molecules evolving under a dipole-dipole interacting Hamiltonian. The demonstrated interspecies dipolar interaction is a key ingredient for hybrid Rydberg-polar molecule systems, where the advantages of each system can be leveraged and combined.

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