1. quantum control to probe non-equilibrium dynamics

Steve Campbell

University College Dublin, Ireland

11 November 2021 Thu 5 pm

                                      IBS Center for Theoretical Physics of Complex Systems (PCS), Administrative Office (B349), Theory Wing, 3rd floor

                                      Expo-ro 55, Yuseong-gu, Daejeon, South Korea, 34126 Tel: +82-42-878-8633                     

Steady progress has been made in developing tools to achieve high fidelity control of complex quantum systems. Within the plethora of techniques shortcuts to adiabaticity present a uniquely insightful perspective since they are often analytically determined. By knowing precisely how to suppress an otherwise non-equilibrium dynamics, in this discussion I will argue that quantum control provides a versatile window through which one can study and understand these processes, albeit not without some limitations. This will be explicitly demonstrated by recovering the correct Kibble-Zurek scaling from the quantum speed limit for the controlled dynamics.

REF: Puebla, Deffner, Campbell, "Kibble-Zurek scaling in quantum speed limits for shortcuts to adiabaticity" Phys. Rev. Research 2, 032020(R) (2020)