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arXiv · 1504.01838

Observation of nonlinear variations in three-vertex geometric phase in two-photon polarization qutrit

Kazuhisa Ogawa·Shuhei Tamate·Hirokazu Kobayashi·Toshihiro Nakanishi·Masao Kitano
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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.

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Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanishi, Masao Kitano. 2015-04-08. Observation of nonlinear variations in three-vertex geometric phase in two-photon polarization qutrit. https://doi.org/10.1103/physreva.91.062118

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