Mark Steger

Mark Steger is a part-time faculty member in the Department of Physics & Astronomy at the University of Pittsburgh, affiliated with the Dietrich School of Arts and Sciences. His research focuses on microcavity exciton-polaritons, semiconductor quasiparticles combining light and matter, with applications in quantum technologies and optoelectronics.

• University of Pittsburgh, Dietrich School of Arts and Sciences
• Department of Physics & Astronomy

Steger’s work explores the quantum properties of polaritons, including their use in all-optical transistors, low-threshold polariton lasers, and long-range coherence. He investigates advanced materials like GaN, CdZnSe, organic semiconductors, and MoS2 for room-temperature strong coupling, and develops high-quality microcavities with extended polariton lifetimes for enhanced quantum effects.

His recent publications highlight advancements in polariton condensates, quantum fluctuations, and photonic applications. Articles span topics such as synthetic gauge fields, topological phase transitions, and ultrafast control of light-matter coupling, reflecting interdisciplinary research at the intersection of quantum optics, condensed matter physics, and semiconductor technology.

Steger completed his PhD under the guidance of David W. Snoke, focusing on enhancing microcavity polaritons for technological applications. His work contributes to understanding polariton interactions, thermalization, and potential integration into electronic or optical circuits.