An integrated high-flux cold atomic beam source for strontium

Author:

Li Jie12ORCID,Jia Zhi-Peng12,Liu Peng23,Liu Xiao-Yong12,Wang De-Zhong12,Kong De-Quan12ORCID,Li Su-Peng12ORCID,Cui Xing-Yang123,Dai Han-Ning123ORCID,Chen Yu-Ao123ORCID,Pan Jian-Wei123ORCID

Affiliation:

1. Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China 1 , Hefei 230026, China

2. Shanghai Research Center for Quantum Sciences and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China 2 , Shanghai 201315, China

3. Hefei National Laboratory, University of Science and Technology of China 3 , Hefei 230088, China

Abstract

We present the design, construction, and characterization of an integrated cold atomic beam source for strontium (Sr), which is based on a compact Zeeman slower for slowing the thermal atomic beam and an atomic deflector for selecting the cold flux. By adopting arrays of permanent magnets to produce the magnetic fields of the slower and the deflector, we effectively reduce the system size and power compared to traditional systems with magnetic coils. After the slower cooling, one can employ additional transverse cooling in the radial direction and improve the atom collimation. The atomic deflectors employ two stages of two-dimensional magnetic-optical trapping (MOT) to deflect the cold flux, whose atomic speed is lower than 50 m/s, by 20° from the thermal atomic beam. We characterize the cold atomic beam flux of the source by measuring the loading rate of a three-dimensional MOT. The loading rates reach up to 109 atoms/s. The setup is compact, highly tunable, lightweight, and requires low electrical power, which addresses the challenge of reducing the complexity of building optical atomic clocks and quantum simulation devices based on Sr.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Shanghai Municipal Science and Technology Major Project

Innovation Program for Quantum Science and Technology

Publisher

AIP Publishing

Subject

Instrumentation

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