Experimental investigation of initial system-environment correlations via trace distance evolution
Quantum Physics
2011-09-20 v2
Abstract
The trace distance between two states of an open quantum system quantifies their distinguishability, and for a fixed environmental state can increase above its initial value only in the presence of initial system-environment correlations. We provide for the first time experimental evidence of such a behavior. In our all-optical apparatus we exploit spontaneous parametric down conversion as a source of polarization entangled states, and a spatial light modulator to introduce in a general fashion correlations between the polarization and the momentum degrees of freedom, which act as environment.
Cite
@article{arxiv.1105.0174,
title = {Experimental investigation of initial system-environment correlations via trace distance evolution},
author = {Andrea Smirne and Davide Brivio and Simone Cialdi and Bassano Vacchini and Matteo G. A. Paris},
journal= {arXiv preprint arXiv:1105.0174},
year = {2011}
}
Comments
4 pages, 3 figures; v2: corresponds to published version