Ultrasensitive Beam Deflection Measurement via Interferometric Weak Value Amplification
Ultrasensitive Beam Deflection Measurement via Interferometric Weak Value Amplification
复制标题
DOI：
10.1103/physrevlett.102.173601
复制
发表时间：
2009-05-01
影响因子：
8.6
通讯作者：
Howell, John C.
中科院分区：
文献类型：
--
作者：
Dixon, P. Ben;Starling, David J.;Howell, John C.
我们报告使用干涉弱值技术放大非常小的横向偏转的光束。通过使光束的横向自由度与Sagnac干涉仪的哪一路状态纠缠，可以实现偏振无关偏转的光放大器。沿着提出了干涉弱值放大法的理论，并与实验结果进行了比较，两者符合较好。特别感兴趣的是，我们测量了反射镜的角度偏转下降到400 +/- 200 frad，压电致动器的线性行程下降到14 +/- 7 fm。
We report on the use of an interferometric weak value technique to amplify very small transverse deflections of an optical beam. By entangling the beam's transverse degrees of freedom with the which-path states of a Sagnac interferometer, it is possible to realize an optical amplifier for polarization independent deflections. The theory for the interferometric weak value amplification method is presented along with the experimental results, which are in good agreement. Of particular interest, we measured the angular deflection of a mirror down to 400 +/- 200 frad and the linear travel of a piezo actuator down to 14 +/- 7 fm.