24 citations · 38 across the 7 of their papers we have counts for
6 papers · 1 filter
Orbital Angular Momentum Generation in Schwinger Scattering from Perfect Quartz
Niels Geerits, Anna-Sophie Berger, Hartmut Lemmel +4
Static electric fields have been suggested as a spin to orbital angular momentum converter in neutrons. Initial calculations showed that the field required to facilitate significan…
Measuring the Angular Momentum of a Neutron Using Earth's Rotation
Niels Geerits, Stephan Sponar, Kyle E. Steffen +6
A coupling between Earths rotation and orbital angular momentum (OAM), known as the Sagnac effect, is observed in entangled neutrons produced using a spin echo interferometer. Afte…
Violation of a Leggett-Garg inequality using ideal negative measurements in neutron interferometry
Elisabeth Kreuzgruber, Richard Wagner, Niels Geerits +2
We report on an experiment that demonstrates the violation of a Leggett-Garg inequality (LGI) with neutrons. LGIs have been proposed in order to assess how far the predictions of q…
Three-Path Quantum Cheshire Cat Observed in Neutron Interferometry
Armin Danner, Niels Geerits, Hartmut Lemmel +3
The paradoxical phenomenon of the quantum Cheshire Cat (qCC) refers to situations where different properties of a particle appear to be localised in different paths of an interfero…
Phase Vortex Lattices in Neutron Interferometry
Niels Geerits, Hartmut Lemmel, Anna-Sophie Berger +1
A combination of aluminium prisms inserted into a nested loop interferometer is used to generate a neutron phase vortex lattice with significant extrinsic orbital angular momentum,…
Quantifying the presence of a neutron in the paths of an interferometer
Hartmut Lemmel, Niels Geerits, Armin Danner +3
It is commonly assumed that no accurate experimental information can be obtained on the path taken by a particle when quantum interference between the paths is observed. However, r…