Related Experiment Video
Updated: Jun 29, 2026
11:08
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Fully Programmable Slow Light Based on a Spinor Representation of Generalized Coupled-Resonator-Induced Transparency
Seungkyun Park1,2,3, Beomjoon Chae2, Hyungchul Park2
1Photonic Systems Laboratory, Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|June 28, 2026
Summary
Researchers developed programmable coupled-resonator-induced transparency (CRIT) using dual-channel gauge fields. This breakthrough enables dynamic spectral engineering for advanced photonic integrated circuits and optical interconnects.
Area of Science:
- Quantum optics and photonics
- Topological photonics
- Integrated photonics
Background:
- Electromagnetically induced transparency (EIT) relies on quantum interference in atomic systems.
- Coupled-resonator-induced transparency (CRIT) is a photonic analogue of EIT, crucial for slow light applications.
- Topological photonics inspires generalizing EIT and CRIT using gauge fields.
Purpose of the Study:
- To propose and demonstrate a generalized CRIT framework.
- To enable fully programmable CRIT with dynamical spectral engineering.
- To unify EIT and CRIT descriptions using spinor representation and unitary operations.
Main Methods:
- Introduced a spinor representation for bright- and dark-mode resonances.
- Utilized dual-channel gauge fields for a coupled-resonator building block.
- Demonstrated a programmable slow-light band in a 1D CRIT lattice.
Main Results:
- Achieved fully programmable CRIT with dynamical spectral engineering.
- Developed a unified description of design parameters through universal unitary operations.
- Implemented a programmable CRIT unit cell on a silicon nitride platform.
Conclusions:
- The proposed generalized CRIT addresses needs in optical interconnects.
- Demonstrated tunable delay lines, reconfigurable synchronization, and linear frequency conversion.
- Paves the way for advanced functionalities in photonic integrated circuits.
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