Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms

• URL: http://arxiv.org/abs/2506.00705v1
• Date: Sat, 31 May 2025 20:34:14 GMT
• Title: Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms
• Authors: Silpa B S, Shovan Kanti Barik, Varna Shenoy, Soham Chandak, Rejish Nath, Sanjukta Roy,
• Abstract summary: We demonstrate the effect of inter-atomic interaction in highly excited Rydberg atoms via Autler-Townes splitting in cold atoms.<n>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.
• Score: 1.0365583543874495
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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