Harvesting quantum coherence from axion dark matter

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


Quantum coherence is one of the most striking features of quantum mechanics rooted in the superposition principle. Recently, it has been demonstrated that it is possible to harvest the quantum coherence from a coherent scalar field. In order to explore a new method of detecting axion dark matter, we consider a point-like Unruh-DeWitt detector coupled to the axion field and quantify a coherent measure of the detector. We show that the detector can harvest the quantum coherence from the axion dark matter. To be more precise, we consider a two-level electron system in an atom as the detector. In this case, we obtain the coherence measure C = 2.2 × 10-6γ(T/1s) where T and γ are an observation time and the Lorentz factor. At the same time, the axion mass ma we can probe is determined by the energy gap of the detector.

ジャーナルModern Physics Letters A
出版ステータス出版済み - 2月 20 2022

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 天文学と天体物理学
  • 物理学および天文学(全般)


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