V. Buzek, M. Hillery, and R.F. Werner: "Optimal manipulations with qubits: universal NOT gate" Phys.Rev. A 60 (1999) R2626R2629 (quant-ph/9901053) Home/Search Document Not in Database Summary APS Related Articles Check |
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Quantum Information Theory - an Invitation - Werner (2001) (2 citations) Self-citation (Werner) (Correct)
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V. Buzek, M. Hillery, and R.F. Werner: "Optimal manipulations with qubits: universal NOT gate" Phys.Rev. A 60 (1999) R2626R2629 (quant-ph/9901053)
Quantum Information Theory - an Invitation - Werner (2001) (2 citations) Self-citation (Werner) (Correct)
....Not operation, assigning to each pure qubit state the unique pure state orthogonal to it. Like time reversal, this is just a special case an anti unitarily implemented symmetry operation. In this case, the strategy using a classical estimation as an intermediate step can be shown to be optimal [10]. In this sense Universal Not is a harder task than cloning . T P Estimate Figure 4.1: Classical Teleportation on multiple inputs, or state estimation More generally, we can look at schemes as in Figure 4.1, with T representing any transformation of the density matrix data, whether or not ....
V. Buzek, M. Hillery, and R.F. Werner: "Optimal manipulations with qubits: universal NOT gate" Phys.Rev. A 60 (1999) R2626R2629 (quant-ph/9901053)
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