Transfer of quantum states using finite resources
arXiv:quant-ph/0008038 · doi:10.1103/PhysRevA.63.042305
Abstract
We discuss the problem of transfering a qubit from Alice to Bob using a noisy quantum channel and only finite resources. As the basic protocol for the transfer we apply quantum teleportation. It turns out that for a certain quality of the channel direct teleportation combined with qubit purification is superior to entanglement purification of the channel. If, however, the quality of the channel is rather low one should simply apply an estimation-preparation scheme.
9 pages RevTeX including 5 figures, replaced with revised version, to appear in Phys. Rev. A
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