Local cloning of two product states

Details Local cloning of two product states Local cloning of two product states

2005-01-17

arxiv.org/abs/quant-ph/0501089v2

Phys. Rev. A 72, 032324 (2005)

Physics

Quantum Physics

Totally rewritten with improved results

Scientific paper

10.1103/PhysRevA.72.032324

Local quantum operations and classical communication (LOCC) put considerable constraints on many quantum information processing tasks such as cloning and discrimination. Surprisingly however, discrimination of any two pure states survives such constraints in some sense. In this paper, we show that cloning is not that lucky; namely, conclusive LOCC cloning of two product states is strictly less efficient than global cloning.

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