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.

• Received 4 August 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.240501