不能用传输时间测量吗?
回答: 群速在量子力学/光学里是单个粒子(光子)被观察到的概率振幅(概率的复平方根)波包中心的速度,同样是不可观测量。谁看到过概率?
由 chezclement
于 2018-11-07 10:15:27
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