Speaker: Prof. Marcin Wieśniak Affiliation: University of Gdańsk, Gdańsk, Poland
In 2014 Danan, Farfurnik, Bar-Ad, and Vaidman conducted an experiment with nested Mach-Zehnder interferometer, in which each mirror oscillated with its own frequency. In the data from the experiment they did not find certain characteristic frequencies and they concluded that photons do not follow continuous trajectories. This naturally sparkled a vivid discussion. In my article I used basic tools of interferometry (not even quantum!) to explain this effect, which has already been done before by a number of Authors. I also provide a full account, pointing out higher order effects related to frequencies of all the mirrors. Thus higher-order effects certify the presence of light in all parts of the setup.