Flack Robert, Monachello Vincenzo, Hiley Basil, Barker Peter
Department of Physics and Astronomy, University College, Gower Street, London WC1E 6BT, UK.
Entropy (Basel). 2018 Jul 30;20(8):566. doi: 10.3390/e20080566.
A method for measuring the weak value of spin for atoms is proposed using a variant of the original Stern-Gerlach apparatus. A full simulation of an experiment for observing the real part of the weak value using the impulsive approximation has been carried out. Our predictions show a displacement of the beam of helium atoms in the metastable 23S1 state, Δw, that is within the resolution of conventional microchannel plate detectors indicating that this type of experiment is feasible. Our analysis also determines the experimental parameters that will give an accurate determination of the weak value of spin. Preliminary experimental results are shown for helium, neon and argon in the 23S1 and 3P2 metastable states, respectively.
提出了一种使用原始斯特恩 - 盖拉赫装置的变体来测量原子自旋弱值的方法。利用脉冲近似对观测弱值实部的实验进行了全面模拟。我们的预测表明，处于亚稳态(2^3S_1)的氦原子束的位移(\Delta w)在传统微通道板探测器的分辨率范围内，这表明此类实验是可行的。我们的分析还确定了能够准确测定自旋弱值的实验参数。分别给出了处于(2^3S_1)和(3P_2)亚稳态的氦、氖和氩的初步实验结果。
