Heralded single photons are prepared at a rate of ~100 kHz via conditional measurements on polarization-nondegenerate biphotons produced in a periodically poled KTP crystal. The single-photon Fock state is characterized using high frequency pulsed optical homodyne tomography with a fidelity of (57.6 +- 0.1)%. The state preparation and detection rates allowed us to perform on-the-fly alignment of the apparatus based on real-time analysis of the quadrature measurement statistics.
Cite
@article{arxiv.0905.4910,
title = {Instant single-photon Fock state tomography},
author = {S. R. Huisman and Nitin Jain and S. A. Babichev and Frank Vewinger and A. N. Zhang and S. H. Youn and A. I. Lvovsky},
journal= {arXiv preprint arXiv:0905.4910},
year = {2015}
}