Polarization and Phase Textures in Lattice Plasmon Condensates.

Area of Science:

• Quantum optics
• Condensed matter physics
• Nanophotonics

Background:

• Polarization textures in light are linked to topological defects and light beam engineering.
• Such textures have been observed in photonic crystal lasers and semiconductor polariton condensates.
• Bose-Einstein condensates offer a platform for studying quantum phenomena.

Purpose of the Study:

• To demonstrate domain wall polarization textures in a plasmonic lattice Bose-Einstein condensate.
• To investigate the role of condensate phase in forming these textures.
• To develop a theoretical model for designing and controlling polarization patterns.

Main Methods:

• Fabrication of a plasmonic lattice.
• Creation of a Bose-Einstein condensate within the lattice.
• Phase retrieval algorithm applied to real- and Fourier-space images.
• Development of a theoretical model.

Main Results:

• Successful demonstration of domain wall polarization textures in a plasmonic lattice Bose-Einstein condensate.
• Identification of spatially varying condensate phase as crucial for texture formation.
• Reconstruction of the condensate phase using a phase retrieval algorithm.
• Validation of a theoretical model that explains the observed textures.

Conclusions:

• The study establishes domain wall polarization textures in plasmonic lattice Bose-Einstein condensates.
• The findings highlight the importance of condensate phase in structuring light polarization.
• The developed model facilitates the design and optical switching of polarization patterns.
• This work opens avenues for fundamental studies in non-equilibrium condensation and structured light generation.