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Cloning of orthogonal mixed states entails irreversibility

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arxiv quant-ph/0310142 v1 pith:EYTOPET4 submitted 2003-10-22 quant-ph

Cloning of orthogonal mixed states entails irreversibility

classification quant-ph
keywords orthogonalstatescloningirreversibilitymixedcannotcasescloned
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Orthogonal pure states can be cloned as well as deleted. However if there is an initial disorder in the system, that is for orthogonal mixed states, one cannot perform deletion. And cloning, in such cases, necessarily produces an irreversibility, in the form of leakage of information into the environment.

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