773 citations · 4.9k across the 56 of their papers we have counts for
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Compatibility in Multiparameter Quantum Metrology
Sammy Ragy, Marcin Jarzyna, Rafal Demkowicz-Dobrzanski
Simultaneous estimation of multiple parameters in quantum metrological models is complicated by factors relating to the (i) existence of a single probe state allowing for optimal s…
Super-additivity in communication of classical information through quantum channels from a quantum parameter estimation perspective
Jan Czajkowski, Marcin Jarzyna, Rafal Demkowicz-Dobrzanski
We point out a contrasting role the entanglement plays in communication and estimation scenarios. In the first case it brings noticeable benefits at the measurement stage (output s…
The quantum Allan variance
Krzysztof Chabuda, Ian Leroux, Rafal Demkowicz-Dobrzanski
The instability of an atomic clock is characterized by the Allan variance, a measure widely used to describe the noise of frequency standards. We provide an explicit method to find…