Zero-field and Larmor spinor precessions in a neutron polarimeter experiment

TL;DR

This paper reports a neutron polarimetric experiment demonstrating two types of spinor precessions—zero-field and Larmor—each tunable by different parameters, enabling advanced multi-entangled spinor manipulation.

Contribution

It introduces a neutron polarimetric method to observe and control both zero-field and Larmor spinor precessions, highlighting their distinct tuning mechanisms and potential for quantum manipulation.

Findings

Observation of zero-field and Larmor precessions in neutrons

Independent tuning of each precession type

Potential for multi-entangled spinor control

Abstract

We present a neutron polarimetric experiment where two kinds of spinor precessions are observed: one is induced by different total energy of neutrons (zero-field precession) and the other is induced by a stationary guide field (Larmor precession). A characteristic of the former is the dependence of the energy-difference, which is in practice tuned by the frequency of the interacting oscillating magnetic field. In contrast the latter completely depends on the strength of the guide field, namely Larmor frequency. Our neutron-polarimetric experiment exhibits individual tuning as well as specific properties of each spinor precession, which assures the use of both spin precessions for multi-entangled spinor manipulation.