dr. Bas Westerbaan

github scholar

A universal property for sequential measurement

02 Mar 2016 [ journal (JMP) ]

We study the sequential product, the operation \(p * q = \sqrt{p} q \sqrt{p}\) on the set of effects of a von Neumann algebra that represents sequential measurement of first \(p\) and then \(q\). We give four axioms which completely determine the sequential product.