A permanent Zeeman slower for Sr atomic clock

张远洋 Zhang Yuanyang, 方占军 Fang Zhanjun, 张志刚 Zhang Zhigang

Yuri B. Ovchinnikov

Davood Razzaghi, Mina Baradaran

Yuli Xie

Transverse Zeeman slower composed of an array of permanent magnets is investigated for Sr optical clock. We calculated the magnetic field distribution of 88 Sr atoms based on experimental condition, achieving a reduction of the velocity of atoms from 410 m/s to 50 m/s. The atoms flux through the transverse magnetic field was 7.9×105. Such permanent Zeeman slower needs no high currents or water cooling and the spatial distribution of its magnetic field can be adjusted. Another advantage of this Zeeman slower is its small size and high reliability. Therefore, a miniature Zeeman slower can be attained.

Yuri B. Ovchinnikov

Sławomir Bilicki, Piotr Morzyński, Simon Stellmer +1 more

Abstract We present a modular Zeeman slower (ZS) based on permanent magnets, designed for miniaturized quantum sensor applications like Sr optical lattice clocks. Using a longitudinal magnetic field geometry, the 3D printed system replicates the field profile of traditional solenoid-based ZSs without power consumption or active cooling. The ZS achieves comparable performance to solenoid-based designs, with a similar number of Sr atoms loaded into the magneto-optical trap at 461 nm transition. This approach offers a low-cost, low-power solution for portable quantum technologies.