QUANTUM PHENOMENA STUDIED BY NEUTRON INTERFEROMETRY

Authors
Citation
H. Rauch, QUANTUM PHENOMENA STUDIED BY NEUTRON INTERFEROMETRY, Physica scripta. T, T76, 1998, pp. 24-32
Citations number
70
Categorie Soggetti
Physics
Journal title
ISSN journal
02811847
Volume
T76
Year of publication
1998
Pages
24 - 32
Database
ISI
SICI code
0281-1847(1998)T76:<24:QPSBNI>2.0.ZU;2-6
Abstract
Neutrons are proper tools for testing quantum mechanics because they a re massive, they couple to electromagnetic fields due to their magneti c moment and they are subject to all basic interactions and they are s ensitive to topological effects, as well. Related experiments will be discussed. Recent neutron interferometry experiments based on postsele ction methods renewed the discussion about quantum nonlocality and the quantum measuring process. It has been shown that interference phenom ena can be revived even when the overall interference pattern has lost its contrast. This indicates a persisting coupling in phase space eve n in cases of spatially separated Schrodingercat-like situations. Thes e states are extremely fragile and sensitive against any kind of fluct uations and other decoherence processes. More complete quantum experim ents also show that a complete retrieval of quantum states behind an i nteraction volume becomes impossible in principle.