2008/07/31 by Satoshi Ishizaka, Tohya Hiroshima · 2 citations
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.101.240501
published as Phys. Rev. Lett. 101, 240501 (2008) · 6 pages, 2 figures
arxiv created 2008/12/15 · arxiv updated 2009/12/01
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.