Khon Kaen University’s College of Computing recently hosted its 4th Research Talk, featuring a lecture by Professor Dr. Marcello Bonsangue from the Netherlands, who provided an insightful introduction to the fundamentals of quantum computing.

On 25 November 2025, the College of Computing, Khon Kaen University (KKU), organised the 4th Research Talk under the topic “A Gentle Journey into Quantum Computing: States, Circuits, and Beyond.” The event was held at Room Witaya Vipas 1, Witaya Vipas Building, College of Computing, KKU. The proceedings were honoured by the presence of Professor Dr. Marcello Bonsangue, Professor of Computer Science at Leiden University, Netherlands, and current Scientific Director of LIACS, the Leiden Institute of Advanced Computer Science, who served as the guest speaker.

The lecture focused on a computer science perspective, introducing the crucial fundamentals of quantum computing, such as the “qubit,” which can exist in a state of “superposition” (simultaneously 0 and 1), and the property of “entanglement,” which creates an interconnected link between qubits even when they are physically separated.

Professor Bonsangue further elaborated on the functionality of fundamental quantum gates, such as the Hadamard and CNOT gates, which are used to construct quantum circuits. He emphasised that this technology is expected to excel in specialised parallel processing tasks rather than completely replacing conventional computers. However, he noted that significant physical challenges remain, including the need to manage decoherence, reduce noise-induced errors, and address the currently limited number of available qubits.

The lecture attracted significant interest from instructors, academic staff, and students, both within the College of Computing and external participants. This successful Research Talk deepened participants’ understanding of quantum computing foundations, paving the way for future research and innovation development in this advanced field.