Asymptotic teleportation scheme as a universal programmable quantum processor

Details Asymptotic teleportation scheme as a universal programmable quantum processor Asymptotic teleportation scheme as a universal programmable quantum processor

2008-07-29

arxiv.org/abs/0807.4568v2

Phys. Rev. Lett. 101, 240501 (2008)

Physics

Quantum Physics

6 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.101.240501

We consider a scheme of quantum teleportation where a receiver has multiple (N) output ports and obtains the teleported state by merely selecting one of the N ports according to the outcome of the sender's measurement. We demonstrate that such teleportation is possible by showing an explicit protocol where N pairs of maximally entangled qubits are employed. The optimal measurement performed by a sender is the square-root measurement, and a perfect teleportation fidelity is asymptotically achieved for a large N limit. Such asymptotic teleportation can be utilized as a universal programmable processor.

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