Quantum state reconstruction using binary data from on/off photodetection
Abstract
The knowledge of the density matrix of a quantum state plays a fundamental role in several fields ranging from quantum information processing to experiments on foundations of quantum mechanics and quantum optics. Recently, a method has been suggested and implemented in order to obtain the reconstruction of the diagonal elements of the density matrix exploiting the information achievable with realistic on/off detectors, e.g. silicon avalanche photo-diodes, only able to discriminate the presence or the absence of light. The purpose of this paper is to provide an overview of the theoretical and experimental developments of the on/off method, including its extension to the reconstruction of the whole density matrix.
Cite
@article{arxiv.0810.5472,
title = {Quantum state reconstruction using binary data from on/off photodetection},
author = {G. Brida and M. Genovese and M. Gramegna and A. Meda and F. Piacentini and P. Traina and E. Predazzi and S. Olivares and M. G. A. Paris},
journal= {arXiv preprint arXiv:0810.5472},
year = {2010}
}
Comments
revised version, 11 pages, 6 figures, to appear as a review paper on Adv. Science Lett