使用基于外差方差的功率计检测加速轴子光晕镜实验
Speeding axion haloscope experiments using heterodyne-variance-based detection with a power-meter
AI总结：
本研究提出一种基于外差方差的轴子检测新方法，通过向微波腔注入强信号，利用功率探测器测量干涉方差来搜索轴子，可在高暗计数率下仍保持接近量子噪声极限的灵敏度，并通过演示电路验证了概念可行性。
摘要：
我们提出了一种新的轴子搜索方法，该方法利用注入光子和功率探测器，通过测量轴子信号的干涉方差实现探测。我们向微波腔中注入强信号，无需线性放大器，不仅能获取功率过剩，还能测量输出功率的方差。外部光子与轴子-光子转换信号的干涉会极大增强特定轴子频率处的方差，为轴子的存在提供证据。该方法的优势在于，即使对于暗计数率较高的功率探测器，也能始终获得接近量子噪声极限的灵敏度。我们从解析和数值两方面阐述了该方法的基本概念，并展示了利用简单演示电路得到的实验结果。
英文摘要：
We describe a new axion search method based on measuring the variance in the interference of the axion signal using injected photons with a power detector. The need for a linear amplifier is eliminated by putting a strong signal into the microwave cavity, to acquire not only the power excess but also measure the variance of the output power. The interference of the external photons with the axion to photon converted signal greatly enhances the variance at the particular axion frequency, providing evidence of its existence. This method has an advantage in that it can always obtain sensitivity near the quantum noise limit even for a power detector with high dark count rate. We describe the basic concept of this method both analytically and numerically, and we show experimental results using a simple demonstration circuit.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
