TSVP Talk: "When Light Breaks the Rules: Strongly Driven Collective Modes in Solids" by Egor Kiselev

Title: When Light Breaks the Rules: Strongly Driven Collective Modes in Solids

Speaker: Egor Kiselev, Max Planck Institute for the Physics of Complex Systems

Abstract: Complex optical driving protocols can bring out unexpected collective behavior in solids. Under strong driving, nonlinearities and interactions can destabilize collective motion and give rise to new forms of order. Generating intense, narrowband terahertz pulses remains challenging and can require access to large accelerator facilities. I will discuss how structured visible light can excite collective modes at terahertz frequencies and how the resulting states can change a material’s optical response. I will also outline routes to generating narrowband terahertz radiation from optical signals without an external terahertz source.

Profile: Egor Kiselev is a theoretical physicist and postdoctoral researcher at the Max Planck Institute for the Physics of Complex Systems in Dresden, where he held a Marie Skłodowska-Curie Fellowship. His research focuses on how electrons, spins, and atoms move collectively in solids driven by light. He is particularly interested in how strong driving can break symmetries and give rise to unexpected optical responses, with applications in terahertz photonics.

Language: English

Target audience: General audience/everyone at OIST and beyond.
Freely accessible to all OIST members and guests without registration.

External guests who wish to attend this event are kindly requested to contact us in advance. (外部の方で本イベントに参加をご希望の際は、事前にこちらまでご連絡をお願いいたします。）

This talk will also be broadcast online via Zoom:
Meeting ID: 993 1216 5065
Passcode: 603487

※ Please note that this event may be recorded and the videos uploaded. In addition, photos may be taken during the event. These are intended for publication online (the OIST website, social media, etc.)※