Quantifying quantumness via commutators: an application to quantum walk
Quantum Physics
2013-12-05 v1
Abstract
The question of witnessing or quantifying nonclassicality of quantum systems has been addressed in various ways. For a given system or theory, we propose identifying it with the incompatibility of admissible states. We quantify the nonclassicality of quantum systems using the Hilbert-Schmidt norm of the commutator of two states. As a particular application of this measure, we study the classicalization of a discrete-time quantum walk with a noisy coin.
Cite
@article{arxiv.1312.1329,
title = {Quantifying quantumness via commutators: an application to quantum walk},
author = {Pavan Iyengar and G. N. Chandan and R. Srikanth},
journal= {arXiv preprint arXiv:1312.1329},
year = {2013}
}
Comments
5 pages; 3 figures