Quantum information approach to the implementation of a neutron cavity

Using the quantum information model of dynamical diffraction we consider a neutron cavity composed of two perfect crystal silicon blades capable of containing the neutron wavefunction. We show that the internal confinement of the neutrons through Bragg diffraction can be modelled by a quantum random...

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Bibliographic Details
Published in:New journal of physics 2023-07, Vol.25 (7), p.73016
Main Authors: Nahman-Lévesque, O, Sarenac, D, Lailey, O, Cory, D G, Huber, M G, Pushin, D A
Format: Article
Language:English
Subjects:
Confinement
Crystal defects
Crystals
Dipole moments
dynamical diffraction
Electric dipoles
Geometry
Interferometry
Modelling
neutron cavity
neutron interferometry
Neutrons
Physics
Propagation
quantum information
Quantum phenomena
Random walk
Silicon
Simulation
Surface roughness
Wave diffraction
Wave functions
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Summary:Using the quantum information model of dynamical diffraction we consider a neutron cavity composed of two perfect crystal silicon blades capable of containing the neutron wavefunction. We show that the internal confinement of the neutrons through Bragg diffraction can be modelled by a quantum random walk. Furthermore, we introduce a toolbox for modelling crystal imperfections such as surface roughness and defects. Good agreement is found between the simulation and the experimental implementation, where leakage beams are present, modelling of which is impractical with the conventional theory of dynamical diffraction. Analysis of the standing neutron waves is presented in regards to the crystal geometry and parameters; and the conditions required for well-defined bounces are derived. The presented results enable new approaches to studying the setups utilizing neutron confinement, such as the experiments to measure neutron magnetic and electric dipole moments.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/acdb93