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Laser Physics

State dependence of Rydberg interaction-induced collisional loss

Zhigang Feng, Kejia Zhao, Jingyuan Miao, Difei Li, Zhijun Yang, Zhaochun Wu, He Zhao, Jianming Zhao, Suotang Jia

Published Jul 1, 2016• 0 citations
Publisher

Abstract

Abstract We present a simple analytical formula from an existing theoretical model and theoretically investigate in detail the state dependence of interaction-induced collisional loss rate coefficients, and the various parameter effects on collisional loss rate. We also investigate the different mechanisms and corresponding effects on collisional loss by analyzing our previous experimental results using the present formula, and even investigate the time evolution of Rydberg atom number for different Rydberg states.

DOI
10.1088/1054-660x/26/9/095502

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Abstract We present a simple analytical formula from an existing theoretical model and theoretically investigate in detail the state dependence of interaction-induced collisional loss rate coefficients, and the various parameter effects on collisional loss rate. We also investigate the different mechanisms and corresponding effects on collisional loss by analyzing our previous experimental results using the present formula, and even investigate the time evolution of Rydberg atom number for different Rydberg states.
The total collisional cross sections of caesium Rydberg 40 S state is obtained by measuring the corresponding effective decay rates as a function of Rydberg atoms density in a conventional magneto-optical trap using the state-selective pulse field ionization technique. We investigate the collisional properties for different Rydberg atomic densities in detail. The results indicate that the Rydberg atomic interaction induced collisions is the dominant mechanism leading to the large collisional cross sections.