Erratum: Classical Analogues To Quantum Nonlinear Coherent States In Photonic Lattices (Optics Communications (2011) 284 (1833-1836))

We define a new numerical range of an n×n complex matrix in terms of correlation matrices and develop some of its properties. We also define a related numerical range that arises from Connes\u27 famous embedding problem. © 2011 Elsevier Inc. All rights reserved