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Optimal realization of the transposition maps

F. Buscemi·G. M. D'Ariano·P. Perinotti·M. F. Sacchi
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Abstract

We solve the problem of achieving the optimal physical approximation of the transposition for pure states of arbitrary quantum systems for finite and infinite dimensions. A unitary realization is also given for any finite dimension, which provides the optimal quantum cloning map of the ancilla as well.

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F. Buscemi, G. M. D'Ariano, P. Perinotti, M. F. Sacchi. 2003-04-28. Optimal realization of the transposition maps. https://doi.org/10.1016/s0375-9601(03)00954-x

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