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HomeEvents and SeminarsSeminars12/04/25: Walid Redjem

ECE Departmental Seminar

Networked Competitive Bivirus SIS spread with Higher Order Interactions

Thursday, 12/04/25, 1:30 PM
Light Engineering 250

Abstract: Silicon photonics has long been the foundation of classical optical communication and sensing technologies. Extending this platform into the quantum regime promises scalable, chip-integrated systems for quantum communication and computation. In this talk, I will present recent advances in silicon quantum photonics, focusing on the development and characterization of silicon color centers as deterministic sources of quantum light. These atomic-scale emitters combine optical addressability and spin coherence within a CMOS-compatible material system, opening a path toward scalable quantum hardware. I will then introduce our recent work on scale-invariant solid-state lasers, a new direction enabled by dispersion engineering in photonic crystal cavities. Implemented in III–V semiconductor gain media, these devices exhibit lasing behavior that remains invariant with respect to cavity size, and open a route toward high-power, single-mode operation in fully integrated laser systems. I will conclude by highlighting connections to ongoing efforts in integrated photonic design, education, and workforce development, including collaborations with AIM Photonics and the Quantum Photonics Education Toolkit (QPET) initiative. Together, these efforts aim to establish photonics as a complete and accessible platform for next-generation classical and quantum technologies. 

Bio: Walid Redjem is an Empire Innovation Assistant Professor in the College of Nanoscale Science and Engineering at the University at Albany. He leads the UAlbany Quantum Photonics Lab, which conducts research in quantum photonics to advance quantum computation, communication, and sensing. His group investigates a broad range of physical systems, including III–V lasers, silicon color centers, and integrated photonic architectures. Before joining UAlbany in 2024, he was a postdoctoral scholar in the Department of Electrical Engineering and Computer Sciences at UC Berkeley. He received his Ph.D. in Physics from the University of Montpellier in 2020 and dual B.S. degrees in Physics and Electrical Engineering from the University of Nice in 2013.