Sep 2026
Magnetic-field-calibration-free determination of the hyperfine constant <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>A</mml:mi> </mml:math> in ultracold Fermi gases of
Hyperfine constant $A$ is a key parameter of the hyperfine structure and underpins precision spectroscopy and metrology. In this Letter, we develop a magnetic-field-calibration-free method for determining the ground-state hyperfine constant $A$ in an ultracold $^{40}$K Fermi gas by utilizing a pair of magnetically inse...
Yajing Yang, Biao Shan, Yuhang Zhao et al.
· Physical Review Letters · 0 citations