Fiber-optic realization of anisotropic depolarizing quantum channels
Quantum Physics
2010-07-22 v2 Optics
Abstract
We employed an electrically-driven polarization controller to implement anisotropic depolarizing quantum channels for the polarization state of single photons. The channels were characterized by means of ancilla-assisted quantum process tomography using polarization-entangled photons generated in the process of spontaneous parametric down-conversion. The demonstrated depolarization method offers good repeatability, low cost, and compatibility with fiber-optic setups. It does not perturb the modal structure of single photons, and therefore can be used to verify experimentally protocols for managing decoherence effects based on multiphoton interference.
Cite
@article{arxiv.0707.3728,
title = {Fiber-optic realization of anisotropic depolarizing quantum channels},
author = {Michal Karpinski and Czeslaw Radzewicz and Konrad Banaszek},
journal= {arXiv preprint arXiv:0707.3728},
year = {2010}
}
Comments
7 pages, 6 figures