中国物理B ›› 2026, Vol. 35 ›› Issue (7): 73701-073701.doi: 10.1088/1674-1056/ae577f

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Pre-emptive parametric kill switch for evaporative atomic sources in vacuum

Shuang Li(李爽)1,2,†, Zhiyuan Lin(林志远)1,2,†, Sen Li(李森)1,2, Mohan Zhang(张默含)1,2, Fengquan Zhang(张凤泉)1,2, Jin Hu(胡瑾)1,2, Xiaotong Liu(刘宵彤)1,2, Lin Meng(孟林)1,2, Tim Byrnes1,2,3,4,5,‡, and Valentin Ivannikov(瓦伦丁)2,§   

  1. 1 State Key Laboratory of Precision Spectroscopy, School of Physical and Material Sciences, East China Normal University (ECNU), Shanghai 200062, China;
    2 New York University (NYU) Shanghai, Shanghai 200126, China;
    3 NYU-ECNU Institute of Physics at NYU Shanghai, Shanghai 200062, China;
    4 Center for Quantum and Topological Systems, New York University Abu Dhabi (NYUAD) Research Institute, NYUAD, UAE;
    5 Department of Physics, New York University, New York, NY 10003, USA
  • 收稿日期:2025-12-09 修回日期:2026-03-18 接受日期:2026-03-26 发布日期:2026-07-22
  • 通讯作者: Tim Byrnes, Valentin Ivannikov E-mail:tim.byrnes@nyu.edu;valentin@nyu.edu
  • 基金资助:
    Project supported by the SMEC Scientific Research Innovation Project (Grant No. 2023ZKZD55), the National Natural Science Foundation of China (Grant No. 92576102), the Science and Technology Commission of Shanghai Municipality (Grant No. 22ZR1444600), the NYU Shanghai Boost Fund, the China Foreign Experts Program (Grant No. G2021013002L), the NYU-ECNU Institute of Physics at NYU Shanghai, the NYU Shanghai Major-Grants Seed Fund, and Tamkeen under the NYU Abu Dhabi Research Institute (Grant No. CG008).

Pre-emptive parametric kill switch for evaporative atomic sources in vacuum

Shuang Li(李爽)1,2,†, Zhiyuan Lin(林志远)1,2,†, Sen Li(李森)1,2, Mohan Zhang(张默含)1,2, Fengquan Zhang(张凤泉)1,2, Jin Hu(胡瑾)1,2, Xiaotong Liu(刘宵彤)1,2, Lin Meng(孟林)1,2, Tim Byrnes1,2,3,4,5,‡, and Valentin Ivannikov(瓦伦丁)2,§   

  1. 1 State Key Laboratory of Precision Spectroscopy, School of Physical and Material Sciences, East China Normal University (ECNU), Shanghai 200062, China;
    2 New York University (NYU) Shanghai, Shanghai 200126, China;
    3 NYU-ECNU Institute of Physics at NYU Shanghai, Shanghai 200062, China;
    4 Center for Quantum and Topological Systems, New York University Abu Dhabi (NYUAD) Research Institute, NYUAD, UAE;
    5 Department of Physics, New York University, New York, NY 10003, USA
  • Received:2025-12-09 Revised:2026-03-18 Accepted:2026-03-26 Published:2026-07-22
  • Contact: Tim Byrnes, Valentin Ivannikov E-mail:tim.byrnes@nyu.edu;valentin@nyu.edu
  • Supported by:
    Project supported by the SMEC Scientific Research Innovation Project (Grant No. 2023ZKZD55), the National Natural Science Foundation of China (Grant No. 92576102), the Science and Technology Commission of Shanghai Municipality (Grant No. 22ZR1444600), the NYU Shanghai Boost Fund, the China Foreign Experts Program (Grant No. G2021013002L), the NYU-ECNU Institute of Physics at NYU Shanghai, the NYU Shanghai Major-Grants Seed Fund, and Tamkeen under the NYU Abu Dhabi Research Institute (Grant No. CG008).

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摘要： A robust pre-emptive kill switch for cold atom experiments is introduced to significantly reduce costly system reassembly or replacement. The design incorporates upper (alarm) and lower (evaporation) event detection mechanisms based on predefined thresholds. Meanwhile, a duty cycle timing methodology is employed to prevent unintentional activation of the dispenser when pulse signals occur. The circuit employs generic components, a modular design, and formalized logic, ensuring cost-effectiveness and making the design suitable for school laboratories and other research environments. This design is highly versatile and can be applied to other sensitive devices beyond dispensers, such as heating filaments, titanium sublimation pumps, tungsten lamps, and comparable systems.

关键词: cold atom experiment, alkali metal dispenser, dispenser protection mechanism, vacuum technology

Abstract: A robust pre-emptive kill switch for cold atom experiments is introduced to significantly reduce costly system reassembly or replacement. The design incorporates upper (alarm) and lower (evaporation) event detection mechanisms based on predefined thresholds. Meanwhile, a duty cycle timing methodology is employed to prevent unintentional activation of the dispenser when pulse signals occur. The circuit employs generic components, a modular design, and formalized logic, ensuring cost-effectiveness and making the design suitable for school laboratories and other research environments. This design is highly versatile and can be applied to other sensitive devices beyond dispensers, such as heating filaments, titanium sublimation pumps, tungsten lamps, and comparable systems.

Key words: cold atom experiment, alkali metal dispenser, dispenser protection mechanism, vacuum technology

中图分类号:  (Atom cooling methods)

  • 37.10.De
07.30.Kf (Vacuum chambers, auxiliary apparatus, and materials) 07.77.Gx (Atomic and molecular beam sources and detectors) 84.30.-r (Electronic circuits)