Precision Measurement of the Helium $2^{3\!}S_1- 2^{3\!}P/3^{3\!}P$ Tune-Out Frequency as a Test of QED

B. M. Henson, ∗ J. A. Ross, ∗ K. F. Thomas, C. N. Kuhn, D. K. Shin, S. S. Hodgman, Yong-Hui Zhang, Li-Yan Tang, † G. W. F. Drake, ‡ A. T. Bondy, A. G. Truscott, § and K. G. H. Baldwin ¶ Laser Physics Centre, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia Center for Quantum and Optical Science, Swinburne University of Technology, Melbourne, Australia State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China Physics Department, University of Windsor, Windsor, Ontario, Canada (Dated: October 20, 2021)