级联后选择互补弱值放大
Complementary weak-value amplification with concatenated postselections
摘要：
我们测量了Sagnac干涉仪中的横向动量踢使用弱值放大与两个后选择。第一后选择由Sagnac干涉仪的两个路径之间的偏振相关相位失配控制，并且第二后选择由出口处的偏振器控制。通过监测干涉仪的暗端口，我们研究了级联后选择的互补放大，其中偏振消光比大于空间干涉的对比度。在这种情况下，我们发现，通过引入第二个postselection系统的感兴趣的信号的放大的改善。
英文摘要：
We measure a transverse momentum kick in a Sagnac interferometer using weak-value amplification with two postselections. The first postselection is controlled by a polarization dependent phase mismatch between both paths of a Sagnac interferometer and the second postselection is controlled by a polarizer at the exit port. By monitoring the darkport of the interferometer, we study the complementary amplification of the concatenated postselections, where the polarization extinction ratio is greater than the contrast of the spatial interference. In this case, we find an improvement in the amplification of the signal of interest by introducing a second postselection to the system.
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