Probing an unknown quantum state is a resource-intensive endeavour. Now, it is shown that it may be faster to record observations that are themselves quantum superpositions, rather than classical data.
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Liu, YK. Show, don't tell. Nature Phys 10, 625–626 (2014). https://doi.org/10.1038/nphys3058
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DOI: https://doi.org/10.1038/nphys3058
