# Probing quantum state space: does one have to learn everything to learn something?

@article{Carmeli2017ProbingQS, title={Probing quantum state space: does one have to learn everything to learn something?}, author={Claudio Carmeli and Teiko Heinosaari and Jussi Schultz and Alessandro Toigo}, journal={Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences}, year={2017}, volume={473} }

Determining the state of a quantum system is a consuming procedure. For this reason, whenever one is interested only in some particular property of a state, it would be desirable to design a measurement set-up that reveals this property with as little effort as possible. Here, we investigate whether, in order to successfully complete a given task of this kind, one needs an informationally complete measurement, or if something less demanding would suffice. The first alternative means that in… CONTINUE READING

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