Online Seminars on Non-Hermitian Physics: #1 Anja Metelmann
Channel: NH Seminar Series
Date: 2023-05-17

The field recently coined as non-Hermitian physics explores the physics of systems described by non-Hermitian operators. It primarily concerns the effects brought about by gain and loss, which arise as systems are coupled to external reservoirs. This seminar series covers the most recent and exciting developments in the field of non-Hermitian physics, ranging from classical physics to open quantum systems. It has a strong interdisciplinary focus, addressing both theory and experiments, and aims to provide an interacting space for different communities to share ideas.

We have the great pleasure to have Prof. A. Metelmann as first speaker on the series!

Title: Dissipation and non-linearity as a formidable resource, or how a shark can be helpful

Abstract: Engineered quantum systems are artificial mesoscopic systems whose dynamics are governed by the laws of quantum mechanics. Prominent examples of these mesoscopic systems are ultracold trapped atoms and ions, superconducting circuits and electro/optomechanical systems. These systems are powerful candidates for future quantum technologies and to study the basic laws of quantum mechanics. Every platform comes with its unique challenges, but all face the general issue of (unwanted) nonlinear processes and dissipation. However, in this talk we will discuss how dissipation and nonlinearity can be utilized to form a profitable resource for control, manipulation and read-out of engineered quantum systems. This includes the fascinating aspect of turning dissipation, which in general limits the performance of an experiment, into an advantageous tool. In this talk we will show how engineered dissipative processes allow for the steady-state entanglement of hot propagating modes and In addition, we present theoretical and experimental results for enhanced back-action cooling in nonlinear magnetomechanical systems.

For more information, please visit: https://sites.google.com/view/nh-seminar-series/home