Theory Seminar

Theory Seminar (Dr. Vaidman)

Start:2017/07/19 (Wed) 3:00 PM
End:2017/07/19 (Wed) 4:30 PM
Location:Kenkyu Honkan 3F Seminar Room

Speaker:Dr. Lev Vaidman (Tel Aviv University)
Lecture:The meaning of weak value
Language:英語/English
Contact:Y.Mori (yuichiro-AT-post.kek.jp)

Abstract:

Weak values were introduced as outcomes of weak measurements performed on ensembles of pre- and post-selected quantum systems, i.e., a conditional expectation value. I will argue that a weak value of an observable is a robust property of a single pre- and post-selected quantum system rather than a statistical property. During an infinitesimal time a system with a given weak value affected other systems as if it had been in an eigenstate with eigenvalue equal to the weak value. The difference between the weak value and the expectation value has been demonstrated experimentally on the example of photon polarization.



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