Neutron particles and neutron waves

Synopsis

I present a simple overview of the particle and wave properties of the neutron, with emphasis on their similarities to and differences from light. Neutron interferometry enables one to realize the quantum limit of the Young double slit experiment, when only one neutron is ever present in the interferometer. How can only one neutron go through both slits?  We have used neutron interferometry and holography to address some of the questions of structured waves of light and matter that have been studied recently with electrons, atoms and photons.