Physics – Quantum Physics
Scientific paper
2011-03-22
Phys. Rev. A 83, 062321 (2011)
Physics
Quantum Physics
5 pages, 2 figures
Scientific paper
10.1103/PhysRevA.83.062321
In tasks, where multipartite entanglement plays a central role, state purification is, due to inevitable noise, a crucial part of the procedure. We consider a scenario exploiting the multipartite entanglement in a straightforward multipartite purification algorithm and compare it to bipartite purification procedures combined with state teleportation. While complete purification requires an infinite amount of input states in both cases, we show that for an imperfect output fidelity the multipartite procedure exhibits a major advantage in terms of input states used.
Huber Marcus
Plesch Martin
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