量子力学における弱値と弱測定について(II)

概要

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Weak measurement and weak value explicated by Aharonov et.al. in 1988 have been studied actively in recent years. The concept of weak measurement and weak value involves many ambiguous aspects which have not been clarified fully yet. Accordingly, it is a meaningful attempt to examine several physical quantities in terms of weak values and thereby find its implication in various examples. This time, we present an elementary but fundamental example, which demonstrates that the imaginary part of the weak value represents the interference effect, that is, one of the crucial element of quantum physics, in a rather simple manner.