Marco A. Rodríguez-García

Dec 2, 2024 | link.aps.org | Ciudad Universitaria |Instituto de Física |Marco A. Rodríguez-García

We investigate strategies for reaching the ultimate limit on the precision of frequency estimation when the number of probes used in each run of the experiment is fixed. That limit is set by the quantum Cramér-Rao bound (QCRB), which predicts that the use of maximally entangled probes enhances the estimation precision, when compared with the use of independent probes.