Entanglement-assisted transformation is asymptotically equivalent to multiple-copy transformation

Details Entanglement-assisted transformation is asymptotically equivalent to multiple-copy transformation Entanglement-assisted transformation is asymptotically equivalent to multiple-copy transformation

2004-12-10

arxiv.org/abs/quant-ph/0412077v2

Phys. Rev. A 72, 024306 (2005)

Physics

Quantum Physics

5 pages, revtex4, references updated, no figures. A slightly shorter version appears in PRA

Scientific paper

10.1103/PhysRevA.72.024306

We show that two ways of manipulation of quantum entanglement, namely, entanglement-assisted local transformation [D. Jonathan and M. B. Plenio, Phys. Rev. Lett. {\bf 83}, 3566 (1999)] and multiple-copy transformation [S. Bandyopadhyay, V. Roychowdhury, and U. Sen, Phys. Rev. A {\bf 65}, 052315 (2002)], are equivalent in the sense that they can asymptotically simulate each other's ability to implement a desired transformation from a given source state to another given target state with the same optimal success probability. As a consequence, this yields a feasible method to evaluate the optimal conversion probability of an entanglement-assisted transformation.

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