Observation of nonlinear variations in three-vertex geometric phase in two-photon polarization qutrit
arXiv:1504.01838 · doi:10.1103/PhysRevA.91.062118
Abstract
We experimentally observed nonlinear variations in the three-vertex geometric phase in a two- photon polarization qutrit. The three-vertex geometric phase is defined by three quantum states, which generally forms a three-state (qutrit) system. By changing one of the three constituent states, we observed two rapid increases in the three-vertex geometric phase. The observed variations are inherent in a three-state system and cannot be observed in a two-state system. We used a time-reversed two-photon interferometer to measure the geometric phase with much more intense signals than those of a typical two-photon interferometer.
arXiv comment6 pages, 5 figures
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