# Paradox of Photons Disconnected Trajectories Being Located by Means of "Weak Measurements" in the Nested Mach-Zehnder Interferometer

## TL;DR

This paper argues that the results of weak measurement experiments in nested Mach-Zehnder interferometers can be explained by classical and quantum physics without invoking disconnected photon trajectories, challenging previous interpretations.

## Contribution

The work demonstrates that the observed phenomena can be understood through traditional physics, negating the need for the concept of disconnected photon trajectories.

## Key findings

- Results align with classical electrodynamics and quantum mechanics.
- Disconnected trajectories are unnecessary to explain the experimental outcomes.
- The continuity of photon paths remains consistent with established physics.

## Abstract

Recently, a scheme based on the method of weak measurements to register the trajectories of photons passing through a nested Mach-Zehnder interferometer was proposed [L. Vaidman, Phys. Rev. A \textbf{87}, 052104 (2013)] and then realized [A. Danan, D. Farfurnik, S. Bar-Ad, et al., Phys. Rev. Lett. \textbf{111}, 240402 (2013)]. Interpreting the results of the experiment, the authors concluded that "the photons do not always follow continuous trajectories". It is shown in this work that these results can be easily and clearly explained in terms of traditional classical electrodynamics or quantum mechanics implying the continuity of all possible paths of photons. Consequently, a new concept of disconnected trajectories proposed by the authors of work [Phys. Rev. Lett. \textbf{111}, 240402 (2013)] is unnecessary.