Anticoherent Subspaces
Abstract
We extend the notion of anticoherent spin states to anticoherent subspaces. An anticoherent subspace of order t, is a subspace whose unit vectors are all anticoherent states of order t. We use Klein's description of algebras of polynomials which are invariant under finite subgroups of SU(2) to provide constructions of anticoherent subspaces. Furthermore, we show a connection between the existence of these subspaces and the properties of the higher-rank numerical range for a set of spin observables. We also note that these constructions give us subspaces of spin states all of whose unit vectors have Majorana representations which are spherical designs of order at least t.
Keywords
Cite
@article{arxiv.1610.05841,
title = {Anticoherent Subspaces},
author = {Rajesh Pereira and Connor Paul-Paddock},
journal= {arXiv preprint arXiv:1610.05841},
year = {2017}
}
Comments
This new version corrects an error in section three. The exposition has also been improved and clarified