Searching for Vector Dark Matter with an Optomechanical Accelerometer
Searching for Vector Dark Matter with an Optomechanical Accelerometer
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DOI：
10.1103/physrevlett.126.061301
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发表时间：
2021-02-10
影响因子：
8.6
通讯作者：
Wilson, Dalziel J.
中科院分区：
文献类型：
--
作者：
Manley, Jack;Chowdhury, Mitul Dey;Wilson, Dalziel J.
我们考虑使用光机械加速度计作为超轻暗物质的共振探测器。作为一个具体的例子，我们描述了一种基于氮化硅膜的探测器，它固定在一个铍反射镜上，形成一个光学腔。使用不同的材料可以获得与重子(B)和轻子(L)电荷成正比的力，这被认为是矢量暗物质粒子（“暗光子”）的耦合通道。同时，腔体提供了量子受限位移测量的途径。对于预冷至10 mK的厘米级膜，我们认为在10 kHz附近的0.1%分数带宽(对应于粒子质量为10（-10)eV/c(2)）内，对矢量B - L暗物质的灵敏度可以在几分钟的积分时间内超过Eot-Wash实验。我们的分析可以转化为替代系统，如悬浮粒子，并提出了新一代桌面实验的可能性。
We consider using optomechanical accelerometers as resonant detectors for ultralight dark matter. As a concrete example, we describe a detector based on a silicon nitride membrane fixed to a beryllium mirror, forming an optical cavity. The use of different materials gives access to forces proportional to baryon (B) and lepton (L) charge, which are believed to be coupling channels for vector dark matter particles ("dark photons"). The cavity meanwhile provides access to quantum-limited displacement measurements. For a centimeter-scale membrane precooled to 10 mK, we argue that sensitivity to vector B - L dark matter can exceed that of the Eot-Wash experiment in integration times of minutes, over a fractional bandwidth of similar to 0.1% near 10 kHz (corresponding to a particle mass of 10(-10) eV/c(2)). Our analysis can be translated to alternative systems, such as levitated particles, and suggests the possibility of a new generation of tabletop experiments.