Online seminar by Dr. Priyanga Ganeshan, University of California, USA on 22 May 2026

We are happy to announce the following online seminar by Dr. Priyanga Ganeshan.

The details of the talk are as follows:
Speaker: Dr. Priyanga Ganeshan, University of California, San Diego, USA
Time and Date: 22 May 2026 (Friday), 11:00 hours
Venue: MSB Harishchandra Seminar Hall
Title: Quantum Graphs and the Mathematics of Quantum Advantage
Abstract: Quantum graphs are a non-commutative generalization of classical graphs that have recently emerged across several areas of mathematics, including operator algebras, non-commutative geometry, and quantum information theory. In the context of quantum information, they play a central role in zero-error quantum communication, where they serve as quantum analogues of confusability graphs and provide mathematical models for noise in quantum channels. In this talk, I will present an overview of the mathematical theory of quantum graphs and discuss their significance in quantum information theory. I will illustrate how classical notions such as graph coloring, chromatic numbers, and graph connectivity can be translated into the quantum regime using tools from operator algebras and combinatorics. In particular, I will demonstrate that the quantum chromatic number of a quantum graph is always finite, whereas its classical counterpart may be infinite. This result highlights how quantum graphs serve as a powerful mathematical tool for demonstrating quantum advantage.