论文标题
使用两光子干扰的鲁棒干涉测量
Robust interferometric sensing using two-photon interference
论文作者
论文摘要
对象的角度偏差的精确测量是科学和技术中的常见任务。许多方法为此目的使用光。这些利用干扰效应中的一些以实现技术优势，例如放大效应或简化的测量设备。但是，所有这些方案都要求相位稳定性有用。在这里，我们在理论上和实验上表明，可以通过利用两光子干扰来解除这种缺点，这对相位波动不太敏感。我们的结果表明，非古典干扰可以为鲁棒干涉测量传感提供一条路径，从而在存在相噪声的情况下增加了计量学的精度。
Precise measurement of the angular deviation of an object is a common task in science and technology. Many methods use light for this purpose. Some of these exploit interference effects to achieve technological advantages, such as amplification effects, or simplified measurement devices. However, all of these schemes require phase stability to be useful. Here we show theoretically and experimentally that this drawback can be lifted by utilizing two-photon interference, which is known to be less sensitive to phase fluctuations. Our results show that non-classical interference can provide a path towards robust interferometric sensing, allowing for increased metrological precision in the presence of phase noise.
