Complementary weak-value amplification with concatenated postselections

Gerardo I. Viza, Julián Martínez-Rincón, Wei-Tao Liu, John C. Howell
2016 Physical Review A  
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
more » ... r 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.
doi:10.1103/physreva.94.043825 fatcat:cffnnilgvrgjzix7mrqomqnxza