Generation and detection of spin-orbit coupled neutron beams

Abstract

Spin-orbit coupling of light has come to the fore in nano-optics and plasmonics, and is a key ingredient of topological photonics and chiral quantum optics. We demonstrate a basic tool for incorporating analogous effects into neutron optics: the generation and detection of neutron beams with coupled spin and orbital angular momentum. ${}^3$He neutron spin-filters are used in conjunction with specifically oriented triangular coils to prepare neutron beams with lattices of spin-orbit correlations, as demonstrated by their spin-dependant intensity profiles. These correlations can be tailored to particular applications, such as neutron studies of topological materials.

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• Skyrmion Alignment and Pinning Effects in a Disordered Multi-Phase Skyrmion Material Co8Zn8Mn4
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• Definitive Detection of Orbital Angular Momentum States in Neutrons by Spin-polarized ${}^3$He
• Transition radiation from a Dirac particle wave packet traversing a mirror
• Generation of Ultrarelativistic Vortex Leptons with Large Orbital Angular Momenta
• $Z_n$ symmetry in the vortex muon decay
• Spin-Textured Neutron Beams with Orbital Angular Momentum
• Threshold effects in high-energy vortex state collisions
• Angular momentum effects in neutron decay
• Quantum Information Approach to the Implementation of a Neutron Cavity
• Fundamental Neutron Physics: a White Paper on Progress and Prospects in the US