The quest for the topological qubit: navigating the sea of disorder

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Date: December 9, 2021
Time: 3:45 p.m. - 5:00 p.m.
Location: Zoom
Category: Seminar

Speaker: Professor Tudor Stanescu

Department of Physics and Astronomy

West Virginia University


Abstract: Topological quantum computing is the most elegant way of achieving robust quantum computation. A promising proposal for realizing topological qubits involves Majorana zero modes – quasiparticles with non-Abelian fractional statistics that emerge in certain types of superconductors. In the past ten years, significant progress toward the realization of Majorana zero modes has been made using different types of solid-state systems, particularly proximity-coupled semiconductor-superconductor hybrid structures. Yet, serious challenges still remain. The most significant problem stems from the presence of disorder generated by the fabrication process and by materials that are not clean enough. In this talk, I will sketch the main ideas behind topological quantum computing and Majorana-based topological qubits and emphasize the importance of understanding the role of disorder and minimizing its effects.


Biography: Prof. Stanescu is a theoretical Condensed matter physicist working on topological insulators and superconductors, topological quantum computation, ultra-cold atom systems in optical lattices, and strongly correlated materials. Prof. Stanescu was appointed as an Assistant Professor at the Department of Physics, West Virginia University in 2009, and promoted to an Associate Professor in 2015 and to a Full Professor in 2020. He received his Master of Science in Physics (1991) at the University of Bucharest (Romania) and also in 1997 at the University of Illinois at Urbana-Champaign. He has received his Ph.D. degree in Physics, the University of Illinois at Urbana-Champaign. Prof. Stanescu worked at several different places as a research associate between 2002 and 2009. He wrote his book in 2017 as a title of Introduction to Topological Quantum Matter & Quantum Computation, CRC Press, Taylor & Francis Group.


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Takeshi Sakaomto


December 2021