用于引力波探测的单马赫-曾德尔位形无位移噪声中子干涉仪
Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration
摘要：
由于位移噪声的存在，提高对低频引力波的灵敏度仍然是一个挑战。其中一个解决方案是中子位移无噪声干涉仪（DFI）。我们专注于一个简化的检测器配置，利用的能力来调整中子速度取决于配置。新的配置包括两个分束器和两个反射镜，这构成了一个单一的马赫-曾德尔干涉仪（MZI）。它比以往研究中的两个MZI的配置简单。在频域中可以消除反射镜和分束器的位移噪声。这种抵消可以用相量图直观地解释。
英文摘要：
The improvement of sensitivity to gravitational waves (GWs) at lower frequencies is still challenging on account of displacement noise. One of the solutions is the neutron displacement-noise-free interferometer (DFI). We focus on a simplification of the detector configuration by taking advantage of the ability to adjust the neutron speed depending on the configuration. The new configuration consists of two beamsplitters and two mirrors, which constitute a single Mach-Zehnder interferometer (MZI). It is simpler than the configuration with two MZIs in previous research. All displacement noise of mirrors and beamsplitters can be canceled in the frequency domain. This cancellation can be explained intuitively using a phasor diagram.
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