Harvesting quantum coherence from axion dark matter
Harvesting quantum coherence from axion dark matter
复制标题
从轴子暗物质中获取量子相干性
DOI：
10.1142/s0217732322500286
复制
发表时间：
2022
影响因子：
1.4
通讯作者：
Soda Jiro
中科院分区：
文献类型：
--
作者：
Kanno Sugumi;Matsumura Akira;Soda Jiro
量子相干性是植根于叠加原理的量子力学最显着的特征之一。最近，已经证明可以从相干标量场中获取量子相干性。为了探索一种检测轴子暗物质的新方法，我们考虑将点状Unruh-DeWitt探测器耦合到轴子场并量化探测器的相干测量。我们证明探测器可以从轴子暗物质中获取量子相干性。更准确地说，我们将原子中的两能级电子系统视为探测器。在这种情况下，我们获得了相干性度量，其中是观察时间和洛伦兹因子。同时，我们可以探测的轴子质量由探测器的能隙决定。
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 measurewhereandare an observation time and the Lorentz factor. At the same time, the axion masswe can probe is determined by the energy gap of the detector.