Trapped Electrons and Ions as Particle Detectors,Physical Review Letters

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Trapped Electrons and Ions as Particle Detectors
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-08-05 , DOI: 10.1103/physrevlett.127.061804
Daniel Carney ₁ , Hartmut Häffner ₂ , David C Moore ₃ , Jacob M Taylor _{4,

5}

Affiliation

Electrons and ions trapped with electromagnetic fields have long served as important high-precision metrological instruments, and more recently have also been proposed as a platform for quantum information processing. Here we point out that these systems can also be used as highly sensitive detectors of passing charged particles, due to the combination of their extreme charge-to-mass ratio and low-noise quantum readout and control. In particular, these systems can be used to detect energy depositions many orders of magnitude below typical ionization scales. As illustrations, we suggest some applications in particle physics. We outline a nondestructive time-of-flight measurement capable of sub-eV energy resolution for slowly moving, collimated particles. We also show that current devices can be used to provide competitive sensitivity to models where ambient dark matter particles carry small electric millicharges

≪ e

. Our calculations may also be useful in the characterization of noise in quantum computers coming from backgrounds of charged particles.

中文翻译：

俘获电子和离子作为粒子探测器

被电磁场俘获的电子和离子长期以来一直是重要的高精度计量仪器，最近也被提议作为量子信息处理的平台。在这里我们指出，这些系统还可以用作通过带电粒子的高灵敏度探测器，因为它们结合了极端的荷质比和低噪声量子读出和控制。特别是，这些系统可用于检测低于典型电离尺度许多数量级的能量沉积。作为说明，我们建议在粒子物理学中的一些应用。我们概述了一种能够对缓慢移动的准直粒子进行亚 eV 能量分辨率的无损飞行时间测量。