A recent claim by Meehan that quantum mechanics has a new “control problem” that puts limits on our ability to prepare quantum states and revises our understanding of the no-cloning theorem is examined. We identify flaws in Meehan’s analysis and argue that such a problem does not exist.

中文翻译：

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量子力学没有新问题

Meehan 最近声称量子力学有一个新的“控制问题”，它限制了我们准备量子态的能力，并修改了我们对不可克隆定理的理解。我们找出了 Meehan 分析中的缺陷，并认为这样的问题不存在。