Measuring EDM of <sup>171</sup>Yb Atoms in an Optical Dipole Trap
POSTER
Abstract
The EDM of 171Yb (I = 1/2) is measured with atoms held in an optical dipole trap (ODT). Since Zheng et al. (2022) [1], the E field has been increased to 17.2 kV over an electrode gap of 1 mm, and noise due to the fluctuation of ODT polarization has been reduced. The EDM sensitivity is improved to E-27 e-cm. To quantify the systematic effect induced by parity mixing, both the E field and the ODT laser intensity are calibrated through Stark shifts. Under development is a scheme to simultaneously measure EDM in two ODTs traveling in opposite directions, which would improve statistics as well as suppress the parity-mixing systematic. These trapping and measurement techniques can be transferred to a next-generation EDM measurement of 225Ra.
Publication: [1] T. A. Zheng., et al. 'Measurement of the Electric Dipole Moment of 171Yb Atoms in an Optical Dipole Trap', Phys. Rev. Lett. 129, 083001(2022)
Presenters
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Zheng S Wang
University of Science and Technology of China, University of science and technology of china
Authors
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Zheng S Wang
University of Science and Technology of China, University of science and technology of china
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Yang A Yang
University of Science and Technology of China
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Tao A Zheng
University of Science and Technology of China
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Bo S Wang
university of science and technology of china
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Tian Xia
University of Science and Technology of China
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Zheng-Tian Lu
University of Science and Technology of China