Conditional probabilities in quantum theory and the tunneling-time controversy
Conditional probabilities in quantum theory and the tunneling-time controversy
It is argued that there is a sensible way to define conditional probabilities in quantum mechanics, assuming only Bayes's theorem and standard quantum theory. These probabilities are equivalent to the ``weak measurement'' predictions due to Aharonov {\it et al.}, and hence describe the outcomes of real measurements made on subensembles. …