Measuring evolution of a photon in an interferometer with spectrally resolved modes
Measuring evolution of a photon in an interferometer with spectrally resolved modes
In the year 2013, Danan et al. published a paper [Phys. Rev. Lett. 111, 240402 (2013)] demonstrating a counterintuitive behavior of photons in nested Mach--Zehnder interferometers. The authors then proposed an explanation based on the two-state vector formalism. This experiment and the authors' explanation raised a vivid debate within the …