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arXiv · 2007.10465

Novel repumping on $^{3}$P$_{0}$$\rightarrow$$^{3}$D$_{1}$ for Sr magneto-optical trap and Land\'e g factor measurement of $^{3}$D$_{1}$

Shengnan Zhang·Preetam Ramchurn·Marco Menchetti·Qasim Ubaid·Jonathan Jones·Kai Bongs·Yeshpal Singh
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Abstract

We realize an experimental facility for cooling and trapping strontium (Sr) atoms and measure the Land\'e g factor of $^{3}$D$_{1}$ of $^{88}$Sr. Thanks to a novel repumping scheme with the $^{3}$P$_{2}$$\rightarrow$$^{3}$S$_{1}$ and $^{3}$P$_{0}$$\rightarrow$$^{3}$D$_{1}$ combination and the permanent magnets based self-assembled Zeeman slower, the peak atom number in the continuously repumped blue MOT is enhanced by a factor of 15 with respect to the non-repumping case, and reaches $\sim$1 billion. Furthermore, using the resolved-sideband Zeeman spectroscopy, the Land\'e g factor of $^{3}$D$_{1}$ is measured to be 0.4995(88) showing a good agreement with the theoretical value of 0.4988. The results will have an impact on various applications including atom laser, dipolar interactions, quantum information and precision measurements.

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Shengnan Zhang, Preetam Ramchurn, Marco Menchetti, Qasim Ubaid, Jonathan Jones, Kai Bongs, Yeshpal Singh. 2020-07-20. Novel repumping on $^{3}$P$_{0}$$\rightarrow$$^{3}$D$_{1}$ for Sr magneto-optical trap and Land\'e g factor measurement of $^{3}$D$_{1}$. https://doi.org/10.1088/1361-6455/abbe2c

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