Multiphoton interference effects can be measured with a single detector when two input photons are temporally well separated when compared with the dead time of the single-photon avalanche detector. Here we experimentally demonstrate that the Hong-Ou-Mandel interference effect can be observed with a single non-photon-number resolving detector via a time-delayed coincidence measurement of successive electrical signals from the detector. The two-photon interference experiment is performed by utilizing temporally well-separated pairwise weak coherent pulses and the interference fringes are successfully measured with a high visibility in the range of the limited upper bound for the weak coherent photon source.
@article{arxiv.1706.03588,
title = {Observation of two-photon interference effect with single non-photon-number resolving detector},
author = {Heonoh Kim and Sang Min Lee and Osung Kwon and Han Seb Moon},
journal= {arXiv preprint arXiv:1706.03588},
year = {2017}
}
Comments
4 pages, 3 figures, to be published in Optics Letters