English

Measuring Pancharatnam's relative phase for SO(3) evolutions using spin polarimetry

Quantum Physics 2009-11-10 v2

Abstract

In polarimetry, a superposition of internal quantal states is exposed to a single Hamiltonian and information about the evolution of the quantal states is inferred from projection measurements on the final superposition. In this framework, we here extend the polarimetric test of Pancharatnam's relative phase for spin1/2-{1/2} proposed by Wagh and Rakhecha [Phys. Lett. A {\bf 197}, 112 (1995)] to spin j1j\geq 1 undergoing noncyclic SO(3) evolution. We demonstrate that the output intensity for higher spin values is a polynomial function of the corresponding spin1/2-{1/2} intensity. We further propose a general method to extract the noncyclic SO(3) phase and visibility by rigid translation of two π/2\pi /2 spin flippers. Polarimetry on higher spin states may in practice be done with spin polarized atomic beams.

Keywords

Cite

@article{arxiv.quant-ph/0305083,
  title  = {Measuring Pancharatnam's relative phase for SO(3) evolutions using spin polarimetry},
  author = {Peter Larsson and Erik Sjöqvist},
  journal= {arXiv preprint arXiv:quant-ph/0305083},
  year   = {2009}
}

Comments

New title, minor corrections, journal reference added

R2 v1 2026-07-22T19:39:24.847Z