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Lower bound on the relative error of mixed-state cloning and related operations

A. E. Rastegin
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Abstract

We extend the concept of the relative error to mixed-state cloning and related physical operations, in which the ancilla contains some a priori information about the input state. The lower bound on the relative error is obtained. It is shown that this result contributes to the stronger no-cloning theorem.

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A. E. Rastegin. 2003-01-15. Lower bound on the relative error of mixed-state cloning and related operations. https://doi.org/10.1088/1464-4266/5/6/017

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