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All-optical electromagnetically induced transparency using one-dimensional coupled microcavities
Optics Express
|August 5, 2014
Summary
We demonstrate all-optical electromagnetically induced transparency (EIT) using coupled microcavities in a photonic crystal. This breakthrough enables simpler optical quantum coherence analogs and potential applications.
Area of Science:
- Photonics
- Quantum Optics
- Materials Science
Background:
- Electromagnetically induced transparency (EIT) is a quantum interference effect.
- Photonic crystals offer unique light-matter interaction control.
- Coupled microcavities can exhibit tailored optical properties.
Purpose of the Study:
- To experimentally realize all-optical EIT in a 1D photonic crystal.
- To investigate the control of electromagnetic interactions in coupled microcavities.
- To explore optical analogs of quantum coherence.
Main Methods:
- Fabrication of a 1D SiO2/Si3N4 photonic crystal with a DBR.
- Utilizing coherently interacting SiO2 microcavities with distinct Q-factors.
- Varying the number of bilayers in the coupling DBR to control interactions.
Main Results:
- Achieved all-optical EIT resonance in the reflectivity spectrum for weak coupling.
- Observed splitting into an Autler-Townes-like resonance under strong coupling.
- Demonstrated control over electromagnetic interactions via structural modifications.
Conclusions:
- The study presents the first experimental realization of all-optical EIT in coupled microcavities within a 1D photonic crystal.
- Results pave the way for simpler 1D structures for optical quantum coherence.
- Potential applications of coupled microcavities (CMCs) are discussed.
