applications to quantum cryptography


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Post selection technique for quantum channels with applications to quantum cryptography

FREE-DOWNLOAD M Christandl, R König… – Physical review letters, 2009
We propose a general method for studying properties of quantum channels acting on an n-partite
system, whose action is invariant under permutations of the subsystems. Our main result is
that, in order to prove that a certain property holds for an arbitrary input, it is sufficient to




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