We examine the perfect cloning of nonlocal, orthogonal states using only local operations and classical communication. We provide a complete characterisation of the states that can be cloned under these restrictions, and their relation to distinguishability. We also consider the case of catalytic cloning, which we show provides no enhancement to the set of clonable states.
机构:
Chinese Acad Sci, Grad Univ, Dept Phys, Beijing 100049, Peoples R ChinaChinese Acad Sci, Grad Univ, Dept Phys, Beijing 100049, Peoples R China
Li, Jun-Li
Qiao, Cong-Feng
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机构:
Chinese Acad Sci, Grad Univ, Dept Phys, Beijing 100049, Peoples R China
Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R ChinaChinese Acad Sci, Grad Univ, Dept Phys, Beijing 100049, Peoples R China