Realization of a doped quantum antiferromagnet with dipolar tunnelings in a Rydberg tweezer array
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915467093868544 |
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| author | Qiao, Mu Emperauger, Gabriel Chen, Cheng Homeier, Lukas Hollerith, Simon Bornet, Guillaume Martin, Romain Gély, Bastien Klein, Lukas Barredo, Daniel Geier, Sebastian Chiu, Neng-Chun Grusdt, Fabian Bohrdt, Annabelle Lahaye, Thierry Browaeys, Antoine |
| author_facet | Qiao, Mu Emperauger, Gabriel Chen, Cheng Homeier, Lukas Hollerith, Simon Bornet, Guillaume Martin, Romain Gély, Bastien Klein, Lukas Barredo, Daniel Geier, Sebastian Chiu, Neng-Chun Grusdt, Fabian Bohrdt, Annabelle Lahaye, Thierry Browaeys, Antoine |
| contents | Doping an antiferromagnetic Mott insulator is central to our understanding of a variety of phenomena in strongly-correlated electrons, including high-temperature superconductors. To describe the competition between tunneling $t$ of hole dopants and antiferromagnetic (AFM) spin interactions $J$, theoretical and numerical studies often focus on the paradigmatic $t$-$J$ model, and the direct analog quantum simulation of this model in the relevant regime of high-particle density has long been sought. Here, we realize a doped quantum antiferromagnet with next-nearest neighbour (NNN) tunnelings $t'$ and hard-core bosonic holes using a Rydberg tweezer platform. We utilize coherent dynamics between three Rydberg levels, encoding spins and holes, 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 $|t/J|\ll 1$, and demonstrate the formation of repulsively bound hole pairs in a variety of spin backgrounds. The interference between NNN tunnelings $t'$ and perturbative pair tunneling 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 to a larger class of $t$-$J$ and spin-$1$ models. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_08233 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Realization of a doped quantum antiferromagnet with dipolar tunnelings in a Rydberg tweezer array Qiao, Mu Emperauger, Gabriel Chen, Cheng Homeier, Lukas Hollerith, Simon Bornet, Guillaume Martin, Romain Gély, Bastien Klein, Lukas Barredo, Daniel Geier, Sebastian Chiu, Neng-Chun Grusdt, Fabian Bohrdt, Annabelle Lahaye, Thierry Browaeys, Antoine Quantum Physics Quantum Gases Strongly Correlated Electrons Atomic Physics Doping an antiferromagnetic Mott insulator is central to our understanding of a variety of phenomena in strongly-correlated electrons, including high-temperature superconductors. To describe the competition between tunneling $t$ of hole dopants and antiferromagnetic (AFM) spin interactions $J$, theoretical and numerical studies often focus on the paradigmatic $t$-$J$ model, and the direct analog quantum simulation of this model in the relevant regime of high-particle density has long been sought. Here, we realize a doped quantum antiferromagnet with next-nearest neighbour (NNN) tunnelings $t'$ and hard-core bosonic holes using a Rydberg tweezer platform. We utilize coherent dynamics between three Rydberg levels, encoding spins and holes, 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 $|t/J|\ll 1$, and demonstrate the formation of repulsively bound hole pairs in a variety of spin backgrounds. The interference between NNN tunnelings $t'$ and perturbative pair tunneling 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 to a larger class of $t$-$J$ and spin-$1$ models. |
| title | Realization of a doped quantum antiferromagnet with dipolar tunnelings in a Rydberg tweezer array |
| topic | Quantum Physics Quantum Gases Strongly Correlated Electrons Atomic Physics |
| url | https://arxiv.org/abs/2501.08233 |