Quantum processes involving single-photon states are of broad interest in particular for quantum communication. Extending to continuous values a recent proposal by Yuan et al \cite{YUAN16}, we show that single-photon quantum processes can be characterized using phase randomized coherent states (PRCS) as inputs. As a proof of principle, we present the experimental investigation of single-photon tomography using PRCS. The probability distribution of field quadratures measurements for single-photon states can be accurately derived from the PRCS data. As a consequence, the Wigner function and the density matrix of single-photon states are reconstructed with good precision. The sensitivity of the reconstruction to experimental errors and the number of PRCS used is addressed.
@article{arxiv.1610.06854,
title = {Probing single-photon state tomography using phase-randomized coherent states},
author = {P. Valente and A. Lezama},
journal= {arXiv preprint arXiv:1610.06854},
year = {2017}
}
Comments
6 pages, 5 figures Replaces previous version: "Simulation of single-photon state tomography using phase-randomized coherent states"