We report direction detection constraints on the presence of hidden photon dark matter with masses between $20–30\mathrm{\mu }\mathrm{eV}{\mathrm{c}}^{-2}$, using a cryogenic emitter-receiver-amplifier spectroscopy setup designed as the first iteration of QUALIPHIDE (quantum limited photons in the dark experiment). A metallic dish sources conversion photons, from hidden photon kinetic mixing, onto a horn antenna which is coupled to a $C$ band kinetic inductance traveling wave parametric amplifier, providing for near quantum-limited noise performance. We demonstrate a first probing of the kinetic mixing parameter $\chi$ to the ${10}^{-12}$ level for the majority of hidden photon masses in this region. These results not only represent stringent constraints on new dark matter parameter space, but are also the first demonstrated use of wideband quantum-limited amplification for astroparticle applications.

中文翻译：

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通过 QUALIPHIDE 实验对隐藏光子暗物质进行宽带直接检测约束

我们报告了对隐藏光子暗物质存在的方向检测约束，其质量介于$20–30\mathrm{\mu }\mathrm{电子伏特}{\mathrm{C}}^{-2}$，使用低温发射器-接收器-放大器光谱装置，设计为 QUALIPHIDE（暗实验中的量子受限光子）的第一次迭代。金属盘将来自隐藏光子动力学混合的转换光子传输到喇叭天线上，喇叭天线耦合到$C$带动电感行波参量放大器，提供接近量子极限的噪声性能。我们演示了对动力学混合参数的首次探测$\chi$到${10}^{-12}$该区域中大多数隐藏光子质量的水平。这些结果不仅代表了对新暗物质参数空间的严格约束，而且也是首次证明宽带量子有限放大在天体粒子应用中的使用。