Probing the Kitaev honeycomb model on a neutral-atom quantum computer
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| author | Evered, Simon J. Kalinowski, Marcin Geim, Alexandra A. Manovitz, Tom Bluvstein, Dolev Li, Sophie H. Maskara, Nishad Zhou, Hengyun Ebadi, Sepehr Xu, Muqing Campo, Joseph Cain, Madelyn Ostermann, Stefan Yelin, Susanne F. Sachdev, Subir Greiner, Markus Vuletić, Vladan Lukin, Mikhail D. |
| author_facet | Evered, Simon J. Kalinowski, Marcin Geim, Alexandra A. Manovitz, Tom Bluvstein, Dolev Li, Sophie H. Maskara, Nishad Zhou, Hengyun Ebadi, Sepehr Xu, Muqing Campo, Joseph Cain, Madelyn Ostermann, Stefan Yelin, Susanne F. Sachdev, Subir Greiner, Markus Vuletić, Vladan Lukin, Mikhail D. |
| contents | Quantum simulations of many-body systems are among the most promising applications of quantum computers. In particular, models based on strongly-correlated fermions are central to our understanding of quantum chemistry and materials problems, and can lead to exotic, topological phases of matter. However, due to the non-local nature of fermions, such models are challenging to simulate with qubit devices. Here we realize a digital quantum simulation architecture for two-dimensional fermionic systems based on reconfigurable atom arrays. We utilize a fermion-to-qubit mapping based on Kitaev's model on a honeycomb lattice, in which fermionic statistics are encoded using long-range entangled states. We prepare these states efficiently using measurement and feedforward, realize subsequent fermionic evolution through Floquet engineering with tunable entangling gates interspersed with atom rearrangement, and improve results with built-in error detection. Leveraging this fermion description of the Kitaev spin model, we efficiently prepare topological states across its complex phase diagram and verify the non-Abelian spin liquid phase by evaluating an odd Chern number. We further explore this two-dimensional fermion system by realizing tunable dynamics and directly probing fermion exchange statistics. Finally, we simulate strong interactions and study dynamics of the Fermi-Hubbard model on a square lattice. These results pave the way for digital quantum simulations of complex fermionic systems for materials science, chemistry, and high-energy physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_18554 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the Kitaev honeycomb model on a neutral-atom quantum computer Evered, Simon J. Kalinowski, Marcin Geim, Alexandra A. Manovitz, Tom Bluvstein, Dolev Li, Sophie H. Maskara, Nishad Zhou, Hengyun Ebadi, Sepehr Xu, Muqing Campo, Joseph Cain, Madelyn Ostermann, Stefan Yelin, Susanne F. Sachdev, Subir Greiner, Markus Vuletić, Vladan Lukin, Mikhail D. Quantum Physics Quantum Gases Atomic Physics Quantum simulations of many-body systems are among the most promising applications of quantum computers. In particular, models based on strongly-correlated fermions are central to our understanding of quantum chemistry and materials problems, and can lead to exotic, topological phases of matter. However, due to the non-local nature of fermions, such models are challenging to simulate with qubit devices. Here we realize a digital quantum simulation architecture for two-dimensional fermionic systems based on reconfigurable atom arrays. We utilize a fermion-to-qubit mapping based on Kitaev's model on a honeycomb lattice, in which fermionic statistics are encoded using long-range entangled states. We prepare these states efficiently using measurement and feedforward, realize subsequent fermionic evolution through Floquet engineering with tunable entangling gates interspersed with atom rearrangement, and improve results with built-in error detection. Leveraging this fermion description of the Kitaev spin model, we efficiently prepare topological states across its complex phase diagram and verify the non-Abelian spin liquid phase by evaluating an odd Chern number. We further explore this two-dimensional fermion system by realizing tunable dynamics and directly probing fermion exchange statistics. Finally, we simulate strong interactions and study dynamics of the Fermi-Hubbard model on a square lattice. These results pave the way for digital quantum simulations of complex fermionic systems for materials science, chemistry, and high-energy physics. |
| title | Probing the Kitaev honeycomb model on a neutral-atom quantum computer |
| topic | Quantum Physics Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2501.18554 |