Physics – Quantum Physics
Scientific paper
2003-04-28
Phys. Lett. A 314, 374 (2003)
Physics
Quantum Physics
10 pages. No figures. Elsart style
Scientific paper
10.1016/S0375-9601(03)00954-X
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.
Buscemi Francesco
D'Ariano Giacomo M.
Perinotti Paolo
Sacchi Massimiliano Federico
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