The no-cloning theorem is challenged by super-replication, a process that takes a number of copies of a state and produces a quadratically larger number of exponentially close-to-perfect copies — the catch being the low odds of success.
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Calsamiglia, J. The occasional super clock-cloner. Nature Phys 10, 91–92 (2014). https://doi.org/10.1038/nphys2853
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DOI: https://doi.org/10.1038/nphys2853
