Qubit or Qudet: Projections onto Reality

Abstract

2022 is the centennial of an event which many consider to be a basis from which quantum mechanics can be derived—the Stern-Gerlach experiment of 1922—despite that the meaning of quantum theory is today an open question. Key is “the measurement problem”, the need to measure quantum phenomena with classical equipment while the boundary separating quantum from classical is unknown. The mechanism of the SG-experiment is analyzed, and the Qubit nature normally projected onto the data is traced to quantization of the detector , labelled a Qudet . This novel interpretation should have downstream consequences, such as the SG-based interpretation of Bell’s Theorem.