Quantum information is based on the apparent contradictions between classical logic and quantum coherence described by Kochen-Specker contextuality. Surprisingly, this contradiction can be demonstrated in a comparatively simple three-path interferometer, where it is impossible to trace the path of a single photon through five consecutive stages of the interferometer. Here, I discuss the paradoxical aspects of single photon interferences revealed by the three-path interferometer and point out the essential role of dynamics in quantum information.
@article{arxiv.2312.13670,
title = {Contextual particle propagation in a three-path interferometer},
author = {Holger F. Hofmann},
journal= {arXiv preprint arXiv:2312.13670},
year = {2023}
}
Comments
Four pages, including three figures. Contribution to the proceedings of QIT49, held December 17th to December 19th 2023 at OIST, Okinawa, Japan