Trade-off between multiple-copy transformation and entanglement catalysis

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Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, 2005, 71 (6)
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We demonstrate that multiple copies of a bipartite entangled pure state may serve as a catalyst for certain entanglement transformations while a single copy cannot. Such a state is termed a "multiple-copy catalyst" for the transformations. A trade-off between the number of copies of source state and that of the catalyst is also observed. These results can be generalized to probabilistic entanglement transformations directly. © 2005 The American Physical Society.
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