Bayesian-optimized all-optical logic gates based on optical pumping in quantum-dot semiconductor optical amplifiers.

Authors

Bisheng Zhu, Kyriakos E Zoiros, Amer Kotb

Published in

Nanoscale. Sep 21, 2026. Epub Sep 21, 2026.

Abstract

The demand for ultrafast, low-cost optical processing exposes limitations in current all-optical Boolean logic gates, including carrier dynamics and manual tuning. We numerically investigate all-optical XOR, AND, NOT, NOR, NAND, and XNOR gates using an optically pumped quantum-dot semiconductor optical amplifier in a Mach-Zehnder interferometer (OP-QD-SOA-MZI). Replacing electrical pumping mitigates pattern dependence and improves logic-level separability at 250 Gb s^-1. Bayesian optimization (BO) replaces exhaustive parameter sweeps. OP yields higher quality factors than electrical pumping. BO-optimized OP-QD-SOA-MZI achieves correct gate operation at 250 Gb s^-1, providing an efficient, high-quality design route for multi-parameter optical logic.

PMID:
42765279
Bibliographic data and abstract were imported from PubMed on 21 Sep 2026.

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