A new approach to the Cramér-Rao-type bound of the pure-state model
K Matsumoto · Journal of Physics A Mathematical and General · 2002
This paper sheds light on non-commutativity in quantum theory as regards theoretical estimation. In it, we calculate the quantum Cramér-Rao-type bound for many cases, by use of a newly proposed powerful technique. We also discuss the use of collective measurement in statistical estimation.