Engineering the Kondo impurity problem with alkaline-earth atom arrays
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911255071031296 |
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| author | Amaricci, Adriano Richaud, Andrea Capone, Massimo Oppong, Nelson Darkwah Scazza, Francesco |
| author_facet | Amaricci, Adriano Richaud, Andrea Capone, Massimo Oppong, Nelson Darkwah Scazza, Francesco |
| contents | We propose quantum simulation experiments of the Kondo impurity problem using cold alkaline-earth(-like) atoms (AEAs) in a combination of optical lattice and optical tweezer potentials. Within an ab initio model for atomic interactions in the optical potentials, we analyze hallmark signatures of the Kondo effect in a variety of observables accessible in cold-atom quantum simulators. We identify additional terms not part of the textbook Kondo problem, mostly ignored in previous works and giving rise to a direct competition between spin and charge correlations - strongly suppressing Kondo physics. We show that the Kondo effect can be restored by locally adjusting the chemical potential on the impurity site, and we identify realistic parameter regimes and preparation protocols suited to current experiments with AEA arrays. Our work paves the way for novel quantum simulations of the Kondo problem and offers new insights into Kondo physics in unconventional regimes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14630 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Engineering the Kondo impurity problem with alkaline-earth atom arrays Amaricci, Adriano Richaud, Andrea Capone, Massimo Oppong, Nelson Darkwah Scazza, Francesco Quantum Gases Mesoscale and Nanoscale Physics Strongly Correlated Electrons Quantum Physics We propose quantum simulation experiments of the Kondo impurity problem using cold alkaline-earth(-like) atoms (AEAs) in a combination of optical lattice and optical tweezer potentials. Within an ab initio model for atomic interactions in the optical potentials, we analyze hallmark signatures of the Kondo effect in a variety of observables accessible in cold-atom quantum simulators. We identify additional terms not part of the textbook Kondo problem, mostly ignored in previous works and giving rise to a direct competition between spin and charge correlations - strongly suppressing Kondo physics. We show that the Kondo effect can be restored by locally adjusting the chemical potential on the impurity site, and we identify realistic parameter regimes and preparation protocols suited to current experiments with AEA arrays. Our work paves the way for novel quantum simulations of the Kondo problem and offers new insights into Kondo physics in unconventional regimes. |
| title | Engineering the Kondo impurity problem with alkaline-earth atom arrays |
| topic | Quantum Gases Mesoscale and Nanoscale Physics Strongly Correlated Electrons Quantum Physics |
| url | https://arxiv.org/abs/2505.14630 |