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arXiv · 1812.02115

The frequency of the ultranarrow ${^1\text{S}_0} - {^3\text{P}_2}$ transition in $^{87}\text{Sr}$

Oleksiy Onishchenko·Sergey Pyatchenkov·Alexander Urech·Chun-Chia Chen·Shayne Bennetts·Georgios A. Siviloglou·Florian Schreck
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Abstract

We determine the frequency of the ultranarrow $^{87}\text{Sr}$ ${^{1}\text{S}_{0}} - {^{3}\text{P}_{2}}$ transition by spectroscopy of an ultracold gas. This transition is referenced to four molecular iodine lines that are observed by Doppler-free saturation spectroscopy of hot iodine vapor. The frequency differences between the Sr and the I$_2$ transitions are measured with an uncertainty of 250 kHz. The absolute frequency of the $^{87}\text{Sr}$ ${^{1}\text{S}_{0}} - {^{3}\text{P}_{2}}$ ($\text{F}'=7/2$) transition is 446648775(30) MHz and limited in accuracy by the iodine reference. This work prepares the use of the Sr ${^{1}\text{S}_{0}} - {^{3}\text{P}_{2}}$ transition for quantum simulation and computation.

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Oleksiy Onishchenko, Sergey Pyatchenkov, Alexander Urech, Chun-Chia Chen, Shayne Bennetts, Georgios A. Siviloglou, Florian Schreck. 2018-12-05. The frequency of the ultranarrow ${^1\text{S}_0} - {^3\text{P}_2}$ transition in $^{87}\text{Sr}$. https://doi.org/10.1103/physreva.99.052503

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