Platform for Electrically Pumped Polariton Simulators and Topological Lasers.

Area of Science:

• Condensed matter physics
• Quantum optics
• Materials science

Background:

• Two-dimensional electronic materials like graphene exhibit unique properties from band structure and symmetry.
• Synthetic matter platforms, including cold atoms and optical cavities, emulate complex quantum systems.
• Exciton polaritons offer a semiconductor-based approach to engineer quantum Hamiltonians and nonlinear optical effects.

Purpose of the Study:

• To introduce an electronically driven square and honeycomb lattice of exciton polaritons.
• To demonstrate a novel platform for emulating 2D electronic material properties.
• To explore the potential for on-chip polariton devices and electrically driven polariton lasers.

Main Methods:

• Fabrication of an exciton polariton system.
• Engineering of square and honeycomb lattice potentials.
• Application of direct current injection for electronic control.
• Characterization of optical emission properties.

Main Results:

• Successful creation of an electronically driven exciton polariton lattice.
• Observation of laser-like emission from high-symmetry points of the lattice.
• Demonstration of a semiconductor platform for emulating 2D material physics.

Conclusions:

• The developed polariton lattice platform shows promise for on-chip applications.
• The observed laser-like emission suggests the feasibility of electrically driven polariton lasers.
• The platform may enable the study of topologically nontrivial phenomena in polariton systems.