Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911196531130368 |
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| author | S, Silpa B Barik, Shovan Kanti Shenoy, Varna Chandak, Soham Nath, Rejish Roy, Sanjukta |
| author_facet | S, Silpa B Barik, Shovan Kanti Shenoy, Varna Chandak, Soham Nath, Rejish Roy, Sanjukta |
| contents | We demonstrate the effect of inter-atomic interaction in highly excited Rydberg atoms via Autler- Townes splitting in cold atoms. We measure the Autler-Townes (AT) splitting of the 5S1/2, F=2 to 5P3/2, F'=3 transition of 87Rb atoms arising due to the strong coupling of the transition via the cooling beams used for the magneto-optical trap (MOT). The AT splitting is probed using a weakly coupled transition from 5P3/2, F'=3 state to highly excited Rydberg states for a wide range of principal quantum numbers (n = 35 - 117). We observe the AT splitting via trap-loss spectroscopy in the MOT by scanning the probe frequency. We observe a drastic increase in the broadening of the AT splitting signal as a result of interaction-induced dephasing effect in cold Rydberg atoms for highly excited Rydberg states with principal quantum number n > 100. We explain our observations using theoretical modelling and numerical simulations based on the Lindblad Master equation. We find a good agreement of the results of the numerical simulation with the experimental measurements. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_00705 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms S, Silpa B Barik, Shovan Kanti Shenoy, Varna Chandak, Soham Nath, Rejish Roy, Sanjukta Atomic Physics Quantum Physics We demonstrate the effect of inter-atomic interaction in highly excited Rydberg atoms via Autler- Townes splitting in cold atoms. We measure the Autler-Townes (AT) splitting of the 5S1/2, F=2 to 5P3/2, F'=3 transition of 87Rb atoms arising due to the strong coupling of the transition via the cooling beams used for the magneto-optical trap (MOT). The AT splitting is probed using a weakly coupled transition from 5P3/2, F'=3 state to highly excited Rydberg states for a wide range of principal quantum numbers (n = 35 - 117). We observe the AT splitting via trap-loss spectroscopy in the MOT by scanning the probe frequency. We observe a drastic increase in the broadening of the AT splitting signal as a result of interaction-induced dephasing effect in cold Rydberg atoms for highly excited Rydberg states with principal quantum number n > 100. We explain our observations using theoretical modelling and numerical simulations based on the Lindblad Master equation. We find a good agreement of the results of the numerical simulation with the experimental measurements. |
| title | Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms |
| topic | Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2506.00705 |