Greg Mazur is an Assistant Professor in the Department of Materials at the University of California, Santa Barbara, where his group works on hybrid quantum devices at the interface of superconductors and semiconductors. His research centers on engineering topological states of matter — in particular non-Abelian modes and Kitaev chains — and on developing the materials and fabrication techniques that make scalable quantum hardware possible.

Before joining UCSB in 2025, Greg was Departmental Lecturer in Materials for Quantum Technologies at the University of Oxford. He previously spent several years at QuTech in Delft, first as a postdoctoral researcher and later as a Quantum Engineer, with an interlude as Senior Quantum Measurement Engineer at Microsoft's quantum computing effort in the Netherlands. His work at QuTech contributed to the first experimental realization of a minimal Kitaev chain in coupled quantum dots (Nature, 2023) and to a body of work on proximity effects, Cooper pair splitting, and Andreev physics in superconductor–semiconductor nanowire devices.

Greg received his PhD from the Institute of Physics of the Polish Academy of Sciences in Warsaw in 2019, with a visiting research stay at the University of Cambridge, and holds BSc and MSc degrees in physics from the University of Warsaw. His publications span Nature, Nature Communications, Physical Review X, Physical Review Applied, and Advanced Materials, and he serves as a reviewer for journals including Nature, Advanced Materials, and Nano Letters.