$In$ $situ$ observation of non-polar to strongly polar atom-ion collision dynamics
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912018444845056 |
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| author | Berngruber, Moritz Bosworth, Daniel J. Herrera-Sancho, Oscar A. Anasuri, Viraatt S. V. Zuber, Nico Hummel, Frederic Krauter, Jennifer Meinert, Florian Löw, Robert Schmelcher, Peter Pfau, Tilman |
| author_facet | Berngruber, Moritz Bosworth, Daniel J. Herrera-Sancho, Oscar A. Anasuri, Viraatt S. V. Zuber, Nico Hummel, Frederic Krauter, Jennifer Meinert, Florian Löw, Robert Schmelcher, Peter Pfau, Tilman |
| contents | The onset of collision dynamics between an ion and a Rydberg atom is studied in a regime characterized by a multitude of collision channels. These channels arise from coupling between a non-polar Rydberg state and numerous highly polar Stark states. The interaction potentials formed by the polar Stark states show a substantial difference in spatial gradient compared to the non-polar state leading to a separation of collisional timescales, which is observed in situ. For collision energies in the range of $k_\textrm{B}\cdotμ$K to $k_\textrm{B}\cdot$K, the dynamics exhibit a counter-intuitive dependence on temperature, resulting in faster collision dynamics for cold - initially "slow" - systems. Dipole selection rules enable us to prepare the collision pair on the non-polar potential in a highly controlled manner, which determines occupation of the collision channels. The experimental observations are supported by semi-classical simulations, which model the pair state evolution and provide evidence for tunable non-adiabatic dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12312 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | $In$ $situ$ observation of non-polar to strongly polar atom-ion collision dynamics Berngruber, Moritz Bosworth, Daniel J. Herrera-Sancho, Oscar A. Anasuri, Viraatt S. V. Zuber, Nico Hummel, Frederic Krauter, Jennifer Meinert, Florian Löw, Robert Schmelcher, Peter Pfau, Tilman Atomic Physics Quantum Physics The onset of collision dynamics between an ion and a Rydberg atom is studied in a regime characterized by a multitude of collision channels. These channels arise from coupling between a non-polar Rydberg state and numerous highly polar Stark states. The interaction potentials formed by the polar Stark states show a substantial difference in spatial gradient compared to the non-polar state leading to a separation of collisional timescales, which is observed in situ. For collision energies in the range of $k_\textrm{B}\cdotμ$K to $k_\textrm{B}\cdot$K, the dynamics exhibit a counter-intuitive dependence on temperature, resulting in faster collision dynamics for cold - initially "slow" - systems. Dipole selection rules enable us to prepare the collision pair on the non-polar potential in a highly controlled manner, which determines occupation of the collision channels. The experimental observations are supported by semi-classical simulations, which model the pair state evolution and provide evidence for tunable non-adiabatic dynamics. |
| title | $In$ $situ$ observation of non-polar to strongly polar atom-ion collision dynamics |
| topic | Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2401.12312 |