Qiao, Mu and Emperauger, Gabriel and Chen, Cheng and Homeier, Lukas and Hollerith, Simon and Bornet, Guillaume and Martin, Romain and Gely, Bastien and Klein, Lukas and Barredo, Daniel and Geier, Sebastian and Chiu, Neng-Chun and Grusdt, Fabian and Bohrdt, Annabelle and Lahaye, Thierry and Browaeys, Antoine (2025) Realization of a doped quantum antiferromagnet in a Rydberg tweezer array. NATURE, 644 (8078). 889-+. ISSN 0028-0836, 1476-4687
Full text not available from this repository. (Request a copy)Abstract
Doping an antiferromagnetic (AFM) Mott insulator is central to our understanding of a variety of phenomena in strongly correlated electrons, including high-temperature superconductors(1,2). To describe the competition between tunnelling t of hole dopants and AFM spin interactions J, theoretical and numerical studies often focus on the paradigmatic t-J model(3) and the direct analogue quantum simulation of this model in the relevant regime of high-particle density has long been sought(4,5). Here we realize a doped quantum antiferromagnet with next-nearest-neighbour (NNN) tunnellings t (refs.(6, 7, 8, 9-10)) and hard-core bosonic holes(11) using a Rydberg tweezer platform. We use coherent dynamics between three Rydberg levels, encoding spins and holes(12), to implement a tunable bosonic t-J-V model allowing us to study previously inaccessible parameter regimes. We observe dynamical phase separation between hole and spin domains for |t/J|<< 1 and demonstrate the formation of repulsively bound hole pairs in a variety of spin backgrounds. The interference between NNN tunnellings t ' and perturbative pair tunnelling gives rise to light and heavy pairs depending on the sign of t. Using the single-site control allows us to study the dynamics of a single hole in 2D square lattice (anti)ferromagnets. The model we implement extends the toolbox of Rydberg tweezer experiments beyond spin-1/2 models(13) to a larger class of t-J and spin-1 models(14,15).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHASE-SEPARATION; SUPERCONDUCTIVITY; PHYSICS; MODEL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Apr 2026 09:59 |
| Last Modified: | 23 Apr 2026 09:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/67582 |
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