Superadiabatic topological pumping on photonic chips

Area of Science:

• Photonics
• Condensed Matter Physics
• Quantum Optics

Background:

• Adiabatic topological pumping provides robust light transport in integrated photonics.
• Current methods face challenges in efficiency, scalability, and miniaturization due to slow modulation requirements.

Purpose of the Study:

• To develop a strategy for shortcut to topological pumping in on-chip photonic devices.
• To achieve significant device miniaturization and high transport efficiency.

Main Methods:

• Developed a gap-mode strategy for shortcut to topological pumping.
• Experimentally demonstrated a super adiabatic paradigm using iterative adiabatic transformations.
• Utilized an on-chip photonic platform for implementation.

Main Results:

• Achieved a 20-fold footprint reduction compared to conventional adiabatic pumping.
• Demonstrated a 50% size reduction relative to optimized Landau-Zener and other advanced implementations.
• Device operates over a broad bandwidth (650-920 nm) with scalable waveguide integration.

Conclusions:

• The developed super adiabatic approach enables ultra-compact photonic integrated circuits.
• This methodology offers a framework for high-efficiency topological photonic transport.
• Paves the way for miniaturized and efficient on-chip photonic devices.