Breaking the weak Heisenberg limit
Breaking the weak Heisenberg limit
We provide a very simple case showing that the weak form of the Heisenberg limit can be beaten while the prior information is improved without bias.Received 4 September 2016DOI:https://doi.org/10.1103/PhysRevA.95.032113©2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasQuantum metrologyQuantum opticsQuantum parameter estimationAtomic, Molecular & OpticalQuantum InformationGeneral Physics