论文标题
相对性和真空波动对量子测量的影响
Effect of relativity and vacuum fluctuations on quantum measurement
论文作者
论文摘要
真空波动可以掩盖测量最小量子对象的检测信号，例如单个颗粒似乎意味着测量精度的基本限制。但是，如我们所示，相对论不变性意味着在零温度下可观察到的空间样光谱的波动消失。正如我们说明电子或光子的说明，可以利用这种完全没有噪声来对单个颗粒进行无噪声测量。我们概述了一个一般方案，以说明基于三角sagnac干涉仪中单个粒子的反传输路径的自我解干，涉及可观察物的空间谱的无噪声测量。
Vacuum fluctuations can obscure the detection signal of the measurement of the smallest quantum objects like single particles seemingly implying a fundamental limit to measurement accuracy. However, as we show relativistic invariance implies the disappearance of fluctuations for the space-like spectrum of an observable at zero temperature. This complete absence of noise can be harnessed to perform noiseless measurement of single particles, as we illustrate for electrons or photons. We outline a general scheme to illustrate the noiseless measurement involving the space-like spectrum of observables based on the self-interference of counter-propagating paths of a single particle in a triangular Sagnac interferometer.
