POVMs: a small but important step beyond standard quantum mechanics
arXiv:quant-ph/0608087 · doi:10.1142/9789812771186_0005
Abstract
It is the purpose of the present contribution to demonstrate that the generalization of the concept of a quantum mechanical observable from the Hermitian operator of standard quantum mechanics to a positive operator-valued measure is not a peripheral issue, allegedly to be understood in terms of a trivial nonideality of practical measurement procedures, but that this generalization touches the very core of quantum mechanics, viz. complementarity and violation of the Bell inequalities.
Contribution to Proceedings of the Workshop `Beyond the quantum', Leiden, May/June 2006