Quantum paradoxes emerging in matter-wave interferometer experiments

          @misc{ scivideos_PIRSA:16060071,
            doi = {10.48660/16060071},
            url = {https://pirsa.org/16060071},
            author = {Hasegawa, Yuji},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Quantum paradoxes emerging in matter-wave interferometer experiments},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2016},
            month = {jun},
            note = {PIRSA:16060071 see, \url{https://scivideos.org/index.php/pirsa/16060071}}
          }
          

Abstract

Peculiarities of quantum mechanical predictions on a fundamental level are investigated intensively in matter-wave optical setups; in particular, neutron interferometric strategy has been providing almost ideal experimental circumstances for experimental demonstrations of quantum effects. In this device quantum interference between beams spatially separated on a macroscopic scale is put on explicit view. Recently, a new counter-intuitive phenomenon, called quantum Cheshire-cat, is observed in a neutron interferometer experiment. Weak measurement and weak values justify the access of the neutrons’ dynamics in the interferometer. Moreover, another experiment reported full determination of weak-values of neutron’s ½-spin; this experiment is further applied to demonstrate quantum Pigeonhole effect and quantum contextual. In my talk, I am going to give an overview of neutron interferometry for investigation of quantum paradoxes.