Measuring pair correlations in Bose and Fermi gases via atom-resolved microscopy
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866918215149420544 |
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| author | Yao, Ruixiao Chi, Sungjae Wang, Mingxuan Fletcher, Richard J. Zwierlein, Martin |
| author_facet | Yao, Ruixiao Chi, Sungjae Wang, Mingxuan Fletcher, Richard J. Zwierlein, Martin |
| contents | We demonstrate atom-resolved detection of itinerant bosonic $^{23}$Na and fermionic $^6$Li quantum gases, enabling the direct in situ measurement of interparticle correlations. In contrast to prior work on lattice-trapped gases, here we realize microscopy of quantum gases in the continuum. We reveal Bose-Einstein condensation with single-atom resolution, measure the enhancement of two-particle $g^{(2)}$ correlations of thermal bosons, and observe the suppression of $g^{(2)}$ for fermions; the Fermi or exchange hole. For strongly interacting Fermi gases confined to two dimensions, we directly observe non-local fermion pairs in the BEC-BCS crossover. We obtain the pairing gap, the pair size, and the short-range contact directly from the pair correlations. In situ thermometry is enabled via the fluctuation-dissipation theorem. Our technique opens the door to the atom-resolved study of strongly correlated quantum gases of bosons, fermions, and their mixtures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08780 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measuring pair correlations in Bose and Fermi gases via atom-resolved microscopy Yao, Ruixiao Chi, Sungjae Wang, Mingxuan Fletcher, Richard J. Zwierlein, Martin Quantum Gases Strongly Correlated Electrons Atomic Physics Quantum Physics We demonstrate atom-resolved detection of itinerant bosonic $^{23}$Na and fermionic $^6$Li quantum gases, enabling the direct in situ measurement of interparticle correlations. In contrast to prior work on lattice-trapped gases, here we realize microscopy of quantum gases in the continuum. We reveal Bose-Einstein condensation with single-atom resolution, measure the enhancement of two-particle $g^{(2)}$ correlations of thermal bosons, and observe the suppression of $g^{(2)}$ for fermions; the Fermi or exchange hole. For strongly interacting Fermi gases confined to two dimensions, we directly observe non-local fermion pairs in the BEC-BCS crossover. We obtain the pairing gap, the pair size, and the short-range contact directly from the pair correlations. In situ thermometry is enabled via the fluctuation-dissipation theorem. Our technique opens the door to the atom-resolved study of strongly correlated quantum gases of bosons, fermions, and their mixtures. |
| title | Measuring pair correlations in Bose and Fermi gases via atom-resolved microscopy |
| topic | Quantum Gases Strongly Correlated Electrons Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2411.08780 |