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

doi:10.1088/1674-1056/24/3/039501

Abstract

The magic wavelengths for different Zeeman components are measured based on the ⁴⁰Ca⁺ optical clock. The dynamic dipole polarizability of a non-zero angular moment level has correlation with the polarization direction of the linearly polarized laser beam, and we show that the four hyperfine structure levels of 4s_{1/2, m = ± 1/2} and 3d_{5/2, m = ± 1/2} for ⁴⁰Ca⁺ have the same dynamic dipole polarizability at the magic wavelength and a certain polarization direction. In addition, the existence of a specific direction of polarization may provide a new idea for improving the precision of magic wavelength measurement in experiment.

Keywords: optical clock dynamic dipole polarizability linearly polarized laser

Received: 07 November 2014
Revised: 21 November 2014
Accepted manuscript online:

PACS:	95.55.Sh	(Auxiliary and recording instruments; clocks and frequency standards)
	76.70.Fz	(Double nuclear magnetic resonance (DNMR), dynamical nuclear polarization)
	29.27.Hj	(Polarized beams)

Fund:

Project supported by the National Basic Research Program of China (Grant No. 2012CB821301), the National Natural Science Foundation of China (Grant Nos. 11474318, 91336211, and 11034009), and the Chinese Academy of Sciences.

Corresponding Authors: Gao Ke-Lin
E-mail: klgao@wipm.ac.cn

Cite this article:

Liu Pei-Liang (刘培亮), Huang Yao (黄垚), Bian Wu (边武), Shao Hu (邵虎), Qian Yuan (钱源), Guan Hua (管桦), Tang Li-Yan (唐丽艳), Gao Ke-Lin (高克林) Correlation between the magic wavelengths and the polarization direction of the linearly polarized laser in the Ca⁺ optical clock 2015 Chin. Phys. B 24 039501

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

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