This paper will overview recent progress in time-dependent metrology. By applying coherent control to a quantum system, we will demonstrate that the amount of information about a parameter can be increased by typically a power law in the duration time of the experiment. Several examples will be given: measurement of an external oscillation frequency, the Landau-Zehner transition, and the details of a recent experiment realizing these physical predictions. A simple example will be analyzed in detail to illustrate the ingredients of the theory.

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Andrew N. Jordan, "Time dependent metrology: improving precision through coherent control," Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 1093306 (Presented at SPIE OPTO: February 06, 2019; Published: 4 March 2019); https://doi.org/10.1117/12.2514947.