Weak values and weak coupling maximizing the output of weak measurements
نویسندگان
چکیده
منابع مشابه
Reconstructing weak values without weak measurements
I propose a scheme for reconstructing the weak value of an observable without the need for weak measurements. The post-selection in weak measurements is replaced by an initial projector measurement. The observable can be measured using any form of interaction, including projective measurements. The reconstruction is effected by measuring the change in the expectation value of the observable due...
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The weak value of a variable O is a description of an effective interaction with that variable in the limit of weak coupling. For a pre-and post-selected system described at time t by the two-state vector Φ| |Ψ (see entry Two-State Vector Formalism), the weak value is [1]: O w ≡ Φ|O|Ψ Φ|Ψ. (1) Contrary to classical physics, variables in quantum mechanics might not have definite values at a give...
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 2014
ISSN: 0003-4916
DOI: 10.1016/j.aop.2014.03.007