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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Supersymmetry-inspired non-Hermitian optical couplers
Maria Principe1, Giuseppe Castaldi2, Marco Consales3
11] Waves Group, Department of Engineering, University of Sannio, I-82100, Benevento, Italy [2] Optoelectronic Division, Department of Engineering, University of Sannio, I-82100, Benevento, Italy.
Scientific Reports
|February 25, 2015
Summary
This study designs non-Hermitian optical couplers for mode selection, enabling higher-order mode removal. Coupling challenges are addressed for applications in optical links and mode-division multiplexing.
Area of Science:
- Photonics
- Quantum Optics
- Waveguide Optics
Background:
- Supersymmetry offers a framework for isospectral optical structures with phase-matched modes.
- This framework has been extended to non-Hermitian systems with gain and loss for mode removal.
Purpose of the Study:
- To design non-Hermitian optical couplers with higher-order mode-selection capabilities.
- To explore applications in mode-division multiplexing for optical communication.
Main Methods:
- Applying supersymmetry to design non-Hermitian optical couplers.
- Analyzing the impact of waveguide coupling on eigenspectra.
- Investigating strategies to overcome limitations in mode selection.
Main Results:
- Demonstrated successful design of non-Hermitian optical couplers for mode selection.
- Identified critical role of coupling in inducing complex eigenspectra.
- Highlighted limitations and proposed solutions for practical implementation.
Conclusions:
- Non-Hermitian optical couplers can achieve higher-order mode selection.
- Waveguide coupling presents challenges due to complex eigenspectra.
- Further research is needed on practical gain levels for feasibility.
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