Correlation between the magic wavelengths and the polarization direction of the linearly polarized laser in the Ca<sup>+</sup> optical clock<xref ref-type="fn" rid="cpb142700fn1">*</xref>

Correlation between the magic wavelengths and the polarization direction of the linearly polarized laser in the Ca⁺ optical clock*

Liu Pei-Liang^a),^b),^c), Huang Yao^a),^b), Bian Wu^a),^b),^c), Shao Hu^a),^b),^c), Qian Yuan^a),^b),^c), Guan Hua^a),^b), Tang Li-Yan^a),^b), Gao Ke-Lin^a),^b)†

The relationship between the magic wavelengths of transitions 4s_{1/2, m =±1/2} → 3d_{5/2, m ±1/2} and angle θ . The θ is the angle between the direction of the linear polarization and the vertical direction. The solid red circles and the solid black blocks represent the measured magic wavelengths at different angles, and the blue triangles are the average values. The errors indicated are the statistical errors of the measurements. The black line in the insert is the average of six blue triangles, and the dashed lines indicate the statistical uncertainty.