Neutron as a quantum object

Helmut Rauch

doi:10.1117/12.475882

22 July 2002 Neutron as a quantum object

Helmut Rauch

Proceedings Volume 4888, First International Workshop on Classical and Quantum Interference; (2002) https://doi.org/10.1117/12.475882
Event: First International Workshop of Research Center for Optics on Classical and Quantum Interference, 2001, Olomouc, Czech Republic

Abstract

Neutrons are proper tools for testing quantum mechanics because they are massive, they couple to electromagnetic fields due to their magnetic moment and they are subject to all basic interactions and they are sensitive to topological effects, as well. Related experiments will be discussed. Deterministic and stochastic partial absorption experiments can be described by Bell-type inequalities. Recent neutron interferometry experiments based on postselection methods renewed the discussion about quantum nonlocality and the quantum measuring process. It has been shown that interference phenomena can be revived even when the overall interference pattem has lost its contrast. This indicates a persisting coupling in phase space even in cases of spatially separated Schrödingercat-like situations. These states are extremely fragile and sensitive against any kind of fluctuations and other decoherence processes. More complete quantum experiments also show that a complete retrieval of quantum states behind an interaction volume becomes impossible in principle. First results of neutron quantum state reconstruction experiments will be presented.

Citation Download Citation

Helmut Rauch "Neutron as a quantum object", Proc. SPIE 4888, First International Workshop on Classical and Quantum Interference, (22 July 2002); https://doi.org/10.1117/12.475882

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