Abstract
AbstractOngoing fascination with quantum mechanics keeps driving the development of the wide field of quantum optics, including its neutron optics branch. Application of neutron-optical methods and, in particular, neutron interferometry and polarimetry has a long-standing tradition for experimental investigations of fundamental quantum phenomena. We give an overview of related experimental efforts made in recent years.
Highlights
Since the early days of quantum mechanics, the peculiarities of this theory have fascinated and upset physicists, but have become an issue of popular science
The second part of the split guide at PF2 is used to feed the aforementioned turbine, which generates ultra-cold neutrons (UCN) by Doppler-shifting the energy of the incident very cold neutrons (VCN) spectrum: The turbine contains a rotating wheel on the outer frame of which curved Ni-mirrors are mounted such that they move slower than the VCN
Concluding remarks and outlook In this paper, we have presented a survey of neutron-optical experiments investigating quantummechanical phenomena of a fundamental nature
Summary
Since the early days of quantum mechanics, the peculiarities of this theory have fascinated and upset physicists, but have become an issue of popular science. A beam of neutrons—massive particles—is split by amplitude division, and superposed coherently after passing through different regions of space During this space-like separation of typically a few centimeters, the neutron wavefunction can be modified in phase and amplitude in various ways. Elaborate geometries have been used: For instance, the skew-symmetric IFM in Fig. 2 (left and center) has a split second plate to provide more space for samples or neutron-optical devices to be inserted in one of the paths. After passing the mirrors (termed BS 2 and BS 2 in Fig. 2 (center)), the state leaving the IFM at the third plate in directions parallel to the incident beam—the so-called 0-beam—is denoted as | 0 = trr | i + ei χ rr t| i Stationary and/or time-dependent magnetic fields can be utilized for arbitrary spin rotations
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