Suppose you have a general state of n-qubits, and you have a second copy with the same state, but with the qubits permuted in some order. Suppose you have given lots of copies of these pairs. What is the minimum number of such copies needed to find the permutation with high certainty as a function of n?(adsbygoogle = window.adsbygoogle || []).push({});

Note that this is a GENERAL state, not a tensor product of n qubits. In the case of a tensor product, the number of copies needed to be almost certain grows linearly with n.

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# Permuting Qubits

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