When
Where
Speaker: Narayanan Rengaswamy, School of Electrical, Computing and Software Engineering, University of Arizona
Title: Quantum Research in the SQALE Group
Abstract:
The Scalable Quantum Architectures by Leveraging Error-correction (SQALE) research group focuses on the quantum error correction and fault tolerance aspects of quantum computing, communication, networking, and sensing systems. In this talk, I will share the various projects we work on in these areas, covering the mathematical to systems aspects of them. I will highlight a quantum algorithm inspired by classical belief propagation for statistical inference on graphical models that has been shown to be quantum-optimal to decode classical codes on a simplified channel model of deep-space optical communications. This algorithm, called belief propagation with quantum messages (BPQM), serves as one example of a quantum algorithm to perform statistical inference on quantum data. While quantum advantage in this communication setup is measured by the achievable throughput rather than by complexity-theoretic arguments as is typical for quantum computing applications, I will argue that more general quantum statistical inference algorithms must be researched to prepare for a future where quantum data is widely available through quantum sensors or by other means.
Bio:
Narayanan Rengaswamy is an assistant professor in the School of Electrical, Computing and Software Engineering (ECSE) at the University of Arizona. He is a Co-PI at the NSF Engineering Research Center for Quantum Networks (CQN) and the DOE Superconducting Quantum Materials and Systems (SQMS) Center at the university. He co-leads the quantum error correction pillar for the NSF National Quantum Virtual Laboratory (NQVL) project, Accelerating Fault-Tolerant Logic (FTL), led by UCLA. His research is centered around quantum error correction and fault tolerance for quantum computing, networking, communications, and sensing. He received his Ph.D. From Duke University in May 2020 and was a postdoc with Bane Vasic in ECSE from 2020-2022. He received the NSF CAREER Award in 2026. His works received Best Paper Awards at the 2024 and 2025 IEEE Quantum Week. He was a Keynote Speaker at the 2024 Fault Tolerant Quantum Technologies workshop. He was one among IEEE Computer Society's Top 30 Early Career Professionals in Computing for 2025. He is an Editor for the journal Quantum and was a Co-Lead Editor for the 2025 IEEE JSAIT Special Issue on Quantum Error Correction and Fault Tolerance. He is a Senior Member of the IEEE and a Member of the AMS and AAAS.