Quantum partial teleportation as optimal cloning at a distance

Details Quantum partial teleportation as optimal cloning at a distance Quantum partial teleportation as optimal cloning at a distance

2004-01-08

arxiv.org/abs/quant-ph/0401039v1

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.69.052301

We propose a feasible scheme of conditional quantum partial teleportation of a qubit as optimal asymmetric cloning at a distance. In this scheme, Alice preserves one imperfect clone whereas other clone is teleported to Bob. Fidelities of the clones can be simply controlled by an asymmetry in Bell-state measurement. The optimality means that tightest inequality for the fidelities in the asymmetric cloning is saturated. Further we design a conditional teleportation as symmetric optimal N-> N+1 cloning from N Alice's replicas on single distant clone. We shortly discussed two feasible experimental implementations, first one for teleportation of polarization state of a photon and second one, for teleportation of a time-bin qubit.

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