Deterministic entanglement concentration
arXiv:quant-ph/0107120 · doi:10.1103/PhysRevA.64.022316
Abstract
Deterministic extraction of Bell pairs from a finite number of partially entangled pairs is discussed. We derive the maximum number of Bell pairs that can be obtained with probability 1 by local operations and classical communication. It is proved that the optimal deterministic concentration needs only a two-pair collective manipulation in each step, and that a collective manipulation of all entangled pairs is not necessary. Finally, this scheme reveals an entanglement measure for the deterministic concentration.
8 pages, 4 figures, REVTeX