The group theoretical aspect of the description of passive lossless optical four-ports (beam splitters) is revisited. It is shown through an example, that this approach can be useful in understanding interferometric schemes where a low number of photons interfere. The formalism is extended to passive lossless optical six-ports, their SU(3)-theory is outlined.
@article{arxiv.quant-ph/0110170,
title = {Photon number conservation and photon interference},
author = {Matyas Koniorczyk and Jozsef Janszky},
journal= {arXiv preprint arXiv:quant-ph/0110170},
year = {2015}
}
Comments
Contribution at "Classical and Quantum Interference" workshop in RCO, Olomouc, Oct. 25-26 2001. A corrected version