Benchmarking direct and indirect dipolar spin-exchange interactions between two Rydberg atoms
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911011233071104 |
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| author | Emperauger, Gabriel Qiao, Mu Bornet, Guillaume Chen, Cheng Martin, Romain Chew, Yuki Torii Gély, Bastien Klein, Lukas Barredo, Daniel Browaeys, Antoine Lahaye, Thierry |
| author_facet | Emperauger, Gabriel Qiao, Mu Bornet, Guillaume Chen, Cheng Martin, Romain Chew, Yuki Torii Gély, Bastien Klein, Lukas Barredo, Daniel Browaeys, Antoine Lahaye, Thierry |
| contents | We report on the experimental characterization of various types of spin-exchange interactions between two individual atoms, where pseudo-spin degrees of freedom are encoded in different Rydberg states. For the case of the direct dipole-dipole interaction between states of opposite parity, such as between $nS$ and $nP$, we investigate the effects of positional disorder arising from the residual atomic motion, on the coherence of spin-exchange oscillations. We then characterize an indirect dipolar spin exchange, i.e., the off-diagonal part of the van der Waals effective Hamiltonian that couples the states $nS$ and $(n+1)S$. Finally, we report on the observation of a new type of dipolar coupling, made resonant using addressable light-shifts and involving four different Rydberg levels: this exchange process is akin to electrically induced Förster resonance, but featuring local control. It exhibits an angular dependence distinct from the usual $1-3\cos^2(θ)$ form of the resonant dipolar spin-exchange. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_15034 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Benchmarking direct and indirect dipolar spin-exchange interactions between two Rydberg atoms Emperauger, Gabriel Qiao, Mu Bornet, Guillaume Chen, Cheng Martin, Romain Chew, Yuki Torii Gély, Bastien Klein, Lukas Barredo, Daniel Browaeys, Antoine Lahaye, Thierry Atomic Physics Quantum Gases Quantum Physics We report on the experimental characterization of various types of spin-exchange interactions between two individual atoms, where pseudo-spin degrees of freedom are encoded in different Rydberg states. For the case of the direct dipole-dipole interaction between states of opposite parity, such as between $nS$ and $nP$, we investigate the effects of positional disorder arising from the residual atomic motion, on the coherence of spin-exchange oscillations. We then characterize an indirect dipolar spin exchange, i.e., the off-diagonal part of the van der Waals effective Hamiltonian that couples the states $nS$ and $(n+1)S$. Finally, we report on the observation of a new type of dipolar coupling, made resonant using addressable light-shifts and involving four different Rydberg levels: this exchange process is akin to electrically induced Förster resonance, but featuring local control. It exhibits an angular dependence distinct from the usual $1-3\cos^2(θ)$ form of the resonant dipolar spin-exchange. |
| title | Benchmarking direct and indirect dipolar spin-exchange interactions between two Rydberg atoms |
| topic | Atomic Physics Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2503.15034 |