Assembling a Bose-Hubbard superfluid from tweezer-controlled single atoms
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arXiv
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| Format: | Preprint |
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2025
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| author | Eckner, William J. Yelin, Theodor Lukin Cao, Alec Young, Aaron W. Oppong, Nelson Darkwah Pollet, Lode Kaufman, Adam M. |
| author_facet | Eckner, William J. Yelin, Theodor Lukin Cao, Alec Young, Aaron W. Oppong, Nelson Darkwah Pollet, Lode Kaufman, Adam M. |
| contents | Quantum simulation relies on the preparation and control of low-entropy many-body systems to reveal the behavior of classically intractable models. The development of new approaches for realizing such systems therefore represents a frontier in quantum science. Here we experimentally demonstrate a new protocol for generating ultracold, itinerant many-body states in a tunnel-coupled two-dimensional optical lattice. We do this by adiabatically connecting a near-ground-state-cooled array of up to 50 single strontium-86 atoms with a Bose-Hubbard superfluid. Through comparison with finite-temperature quantum-Monte-Carlo calculations, we estimate that the entropy per particle of the prepared many-body states is approximately $2 k_B$, and that the achieved temperatures are consistent with a significant superfluid fraction. This represents the first time that itinerant many-body systems have been prepared from rearranged atoms, opening the door to bottom-up assembly of a wide range of neutral-atom and molecular systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_24374 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Assembling a Bose-Hubbard superfluid from tweezer-controlled single atoms Eckner, William J. Yelin, Theodor Lukin Cao, Alec Young, Aaron W. Oppong, Nelson Darkwah Pollet, Lode Kaufman, Adam M. Quantum Gases Atomic Physics Quantum Physics Quantum simulation relies on the preparation and control of low-entropy many-body systems to reveal the behavior of classically intractable models. The development of new approaches for realizing such systems therefore represents a frontier in quantum science. Here we experimentally demonstrate a new protocol for generating ultracold, itinerant many-body states in a tunnel-coupled two-dimensional optical lattice. We do this by adiabatically connecting a near-ground-state-cooled array of up to 50 single strontium-86 atoms with a Bose-Hubbard superfluid. Through comparison with finite-temperature quantum-Monte-Carlo calculations, we estimate that the entropy per particle of the prepared many-body states is approximately $2 k_B$, and that the achieved temperatures are consistent with a significant superfluid fraction. This represents the first time that itinerant many-body systems have been prepared from rearranged atoms, opening the door to bottom-up assembly of a wide range of neutral-atom and molecular systems. |
| title | Assembling a Bose-Hubbard superfluid from tweezer-controlled single atoms |
| topic | Quantum Gases Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2512.24374 |