We present the first experimental demonstration of the optical Sagnac effect at the single-photon level. Using a high quality guided-wave heralded single- photon source at 1550 nm and a fibre optics setup, we obtain an interference pattern with net visibilities up to (99.2 ± 0.4%). On the basis of this high visibility and the compactness of the setup, the interest of such a system for fibre optics gyroscope is discussed.
Cite
@article{arxiv.1312.7754,
title = {Single-photon Sagnac interferometer},
author = {Guillaume Bertocchi and Olivier Alibart and Daniel Barry Ostrowsky and Sébastien Tanzilli and Pascal Baldi},
journal= {arXiv preprint arXiv:1312.7754},
year = {2013}
}