TY - GEN T1 - Ultimate limits to quantum metrology and the meaning of the Heisenberg limit UR - http://dx.doi.org/10.1103/PhysRevA.85.042112 PY - 2012/01/11 AU - Zwierz M AU - PĂ©rez-Delgado CA AU - Kok P ED - Y2 - 2024/12/28 ER -