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arXiv · 2604.22960

No-cloning with unitary scaling

Dafa Li
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Abstract

It is known that the classical information like strings of bits can be copied. In 1982, Wootters and Zurek proposed the quantum no-cloning principle. No-cloning principle says that it is impossible to make an identical copy of an arbitrary unknown quantum pure state by using unitary evolution. In this paper, we call U $|\psi>$, where U is any unitary operator, a U-copy of the state $|{\psi}>$ and show it is impossible to make a U-copy of an arbitrary unknown quantum pure state by using unitary evolution.

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Dafa Li. 2026-04-24. No-cloning with unitary scaling. https://arxiv.org/abs/2604.22960

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