Observation of electric field induced superradiance slowdown in ultracold Rydberg atomic gases

• URL: http://arxiv.org/abs/2408.12268v2
• Date: Fri, 15 Nov 2024 13:00:25 GMT
• Title: Observation of electric field induced superradiance slowdown in ultracold Rydberg atomic gases
• Authors: Yunhui He, Jingxu Bai, Yuechun Jiao, Weibin Li, Jianming zhao,
• Abstract summary: Atoms excited to electronically high-lying Rydberg states decay to low-energy states through spontaneous emission processes. We report experimental observations of a significant slowdown in superradiance upon applying an electric field. Our numerical simulations demonstrate that superradiance decoherence is caused by the Stark shifts of the Rydberg level.
• Score: 0.4169767831866066
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• Abstract: Atoms excited to electronically high-lying Rydberg states decay to low-energy states through spontaneous emission processes. We investigate the impact of a static electric field on the superradiant emission process between Rydberg $|60D_{5/2}\rangle$ and $|61P_{3/2}\rangle$ states in an ultracold Cesium Rydberg atom ensemble. We report experimental observations of a significant slowdown in superradiance upon applying an electric field. To understand the slowing down dynamics, we employ a discrete truncated Wigner approximation (DTWA) method to solve the corresponding master equation numerically. Our numerical simulations demonstrate that superradiance decoherence is caused by the Stark shifts of the Rydberg level. Our theoretical simulations qualitatively match the experimental observations. Our work provides new insights into controlling quantum critical behaviors, with implications for quantum many-body dynamics, and the study of quantum phase transitions.

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