Informational completeness of continuous-variable measurements
Quantum Physics
2015-06-12 v1
Abstract
We justify that homodyne tomography turns out to be informationally complete when the number of independent quadrature measurements is equal to the dimension of the density matrix in the Fock representation. Using this as our thread, we examine the completeness of other schemes, when continuous-variable observations are truncated to discrete finite-dimensional subspaces.
Cite
@article{arxiv.1211.4967,
title = {Informational completeness of continuous-variable measurements},
author = {D. Sych and J. Rehacek and Z. Hradil and G. Leuchs and L. L. Sanchez-Soto},
journal= {arXiv preprint arXiv:1211.4967},
year = {2015}
}
Comments
To appear in Phys. Rev. A