Fermi polaron in atom-ion hybrid systems

• URL: http://arxiv.org/abs/2401.05324v2
• Date: Tue, 03 Dec 2024 09:36:06 GMT
• Title: Fermi polaron in atom-ion hybrid systems
• Authors: Renato Pessoa, S. A Vitiello, L. A Peña Ardila,
• Abstract summary: Atom-ion hybrid systems are promising platforms for the quantum simulation of polaron physics in certain quantum materials. Here, we investigate the ionic Fermi polaron, a charged impurity in a polarized Fermi bath, at zero temperature using quantum Monte Carlo techniques.
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• Abstract: Atom-ion hybrid systems are promising platforms for the quantum simulation of polaron physics in certain quantum materials. Here, we investigate the ionic Fermi polaron, a charged impurity in a polarized Fermi bath, at zero temperature using quantum Monte Carlo techniques. We compute the energy spectrum, residue, effective mass, and structural properties. Significant deviations from field-theory prediction occur in the strong coupling regime due to large density inhomogeneities around the ion. We observe a smooth polaron-molecule transition in contrast with the neutral case. This study provides insights into solid-state systems like Fermi exciton polarons in thin semiconductors and quantum technologies based on atom-ion platforms.

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