Zheng TA, Yang YA, Wang SZ, Singh JT, Xiong ZX, Xia T, Lu ZT. Measurement of the Electric Dipole Moment of ^{171}Yb Atoms in an Optical Dipole Trap.
Phys Rev Lett 2022;
129:083001. [PMID:
36053707 DOI:
10.1103/physrevlett.129.083001]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 04/22/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
The permanent electric dipole moment (EDM) of the ^{171}Yb (I=1/2) atom is measured with atoms held in an optical dipole trap. By enabling a cycling transition that is simultaneously spin-selective and spin-preserving, a quantum nondemolition measurement with a spin-detection efficiency of 50% is realized. A systematic effect due to parity mixing induced by a static E field is observed, and is suppressed by averaging between measurements with optical dipole traps in opposite directions. The coherent spin precession time is found to be much longer than 300 s. The EDM is determined to be d(^{171}Yb)=(-6.8±5.1_{stat}±1.2_{syst})×10^{-27} e cm, leading to an upper limit of |d(^{171}Yb)|<1.5×10^{-26} e cm (95% C.L.). These measurement techniques can be adapted to search for the EDM of ^{225}Ra.
Collapse