تقرير
Realization of an extremely anisotropic Heisenberg magnet in Rydberg atom arrays
| العنوان: | Realization of an extremely anisotropic Heisenberg magnet in Rydberg atom arrays |
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| المؤلفون: | Kim, Kangheun, Yang, Fan, Mølmer, Klaus, Ahn, Jaewook |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Condensed Matter - Quantum Gases, Physics - Atomic Physics |
| الوصف: | Strong mutual interactions correlate elementary excitations of quantum matter and plays a key role in a range of emergent phenomena, from binding and condensation to quantum thermalization and many-body localization. Here, we employ a Rydberg quantum simulator to experimentally demonstrate strongly correlated spin transport in anisotropic Heisenberg magnets, where the magnon-magnon interaction can be tuned two orders of magnitude larger than the magnon hopping strength. In our approach, the motion of magnons is controlled by an induced spin-exchange interaction through Rydberg dressing, which enables coherent transport of a single Rydberg excitation across a chain of ground-state atoms. As the most prominent signature of a giant anisotropy, we show that nearby Rydberg excitations form distinct types of magnon bound states, where a tightly bound pair exhibits frozen dynamics in a fragmented Hilbert space, while a loosely bound pair propagates and establishes correlations beyond a single lattice site. Our scheme complements studies using resonant dipole-dipole interactions between Rydberg states, and opens the door to exploring quantum thermodynamics with ultrastrong interactions and kinetic constraints. Comment: 11 pages, 5 figure |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevX.14.011025 |
| URL الوصول: | http://arxiv.org/abs/2307.04342 |
| رقم الأكسشن: | edsarx.2307.04342 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevX.14.011025 |
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