Chaos, Randomness, and Complexity in Quantum Many-Body Physics by Dariel Mok Wai Keong (Caltech)

In systems composed of many interacting quantum particles, rich and unexpected phenomena can emerge from the basic principles of quantum mechanics. Remarkably, these behaviors often show striking similarities across a diverse array of physical systems, from condensed matter and nuclear physics to models of black holes and quantum gravity. At the heart of this universality lies the concept of quantum chaos. 

In this talk, we will delve into the intricate connections between chaos, randomness, and complexity, and examine these ideas through the lens of quantum information theory. We will introduce the emerging framework of “deep thermalisation”, which provides a new perspective on how complex quantum systems evolve and equilibrate. Finally, we will discuss how insights from quantum chaos can be harnessed to open new avenues for powerful applications in quantum technologies.

About the speaker

Dariel Mok is a PhD candidate in Physics at the California Institute of Technology, working with Prof. John Preskill. He is also the Young NUS Fellow in the Department of Physics at the National University of Singapore. His research lies at the intersection of quantum information science, many-body physics, and atomic, molecular, and optical (AMO) physics. He investigates universal emergent phenomena in a broad range of quantum systems, ranging from collective and many-body dynamics to nonlinear dynamical systems. His theoretical work also contributes to advancing quantum technologies, with applications in precision metrology, quantum control, and secure communication.