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Tilted Poincaré sphere geodesics.
Optics Letters
|March 1, 2022
Summary
Researchers experimentally demonstrated a geometric phase using closed Poincaré sphere trajectories. This work explores phase generation beyond pure Laguerre-Gaussian modes, utilizing elliptical vortex states and optical elements.
Area of Science:
- Quantum optics
- Geometric phase
- Light polarization
Background:
- The geometric phase, a fundamental concept in quantum mechanics, is crucial for understanding phase evolution in optical systems.
- Poincaré sphere trajectories are essential for visualizing and manipulating the polarization states of light.
Purpose of the Study:
- To experimentally demonstrate a novel geometric phase generation.
- To explore closed Poincaré sphere trajectories using geodesic arcs that do not involve the poles.
- To prepare and manipulate arbitrarily tilted single vortex states.
Main Methods:
- Preparation of arbitrarily tilted (elliptical) single vortex states using a spatial light modulator.
- Driving Poincaré sphere circuits through a series of π-converters and Dove prisms.
- Experimental demonstration of geometric phase generation.
Main Results:
- The first experimental demonstration of a geometric phase associated with closed Poincaré sphere trajectories.
- Successful generation of geometric phase using geodesic arcs not including the poles.
- Control over arbitrarily tilted single vortex states.
Conclusions:
- This study expands the understanding of geometric phase generation in optical systems.
- The presented method offers a new pathway for controlling light polarization and phase.
- The findings have implications for quantum optics and optical information processing.
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