High-contrast interference of ultracold fermions
Many-body interference between indistinguishable particles can give rise to strong correlations rooted in quantum statistics. We study such Hanbury Brown–Twiss-type correlations for number states of ultracold massive fermions. Using deterministically prepared 6Li atoms in optical tweezers, we measur...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 April 2019
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| In: |
Physical review letters
Year: 2019, Jahrgang: 122, Heft: 14, Pages: 1-6 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.143602 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.122.143602 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.122.143602 
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| Verfasserangaben: | Philipp M. Preiss, Jan Hendrik Becher, Ralf Klemt, Vincent Klinkhamer, Andrea Bergschneider, Nicolò Defenu, and Selim Jochim |
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| 520 | |a Many-body interference between indistinguishable particles can give rise to strong correlations rooted in quantum statistics. We study such Hanbury Brown–Twiss-type correlations for number states of ultracold massive fermions. Using deterministically prepared 6Li atoms in optical tweezers, we measure momentum correlations using a single-atom sensitive time-of-flight imaging scheme. The experiment combines on-demand state preparation of highly indistinguishable particles with high-fidelity detection, giving access to two- and three-body correlations in fields of fixed fermionic particle number. We find that pairs of atoms interfere with a contrast close to 80%. We show that second-order density correlations arise from contributions from all two-particle pairs and detect intrinsic third-order correlations. | ||
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