ETH Zürich, Switzerland 

腾讯会议ID: 254-457-847
会议密码：0717

Abstract

Driven-dissipative physics lie at the core of quantum optics, but the full interplay between a driven quantum many-body system and its environment remains relatively unexplored in the solid-state realm. In this talk, based on the specific example of a driven superconductor, we investigate from a theoretical perspective the breakdown of the Lindblad formalism due to the invalidity of rotating-wave approximation. Within this regime, we show how a drive which anti-commutes with the superconducting gap operator generically induces an unusual particle-hole structure in the spectral functions from the perspective of the thermal bath. Concomitant with a driving frequency which is near resonant with the intrinsic cutoff frequency of the underlying interaction, this spectral structure can be harnessed to enhance the superconducting transition temperature. Our work can enlighten further studies for driven-dissipative engineering of exotic phases of matter in solid-state systems.

Reference: R. Lin et al., arXiv: 2306.02861

Brief CV of Dr. Rui Lin:

Rui Lin has very recently graduated as a doctoral student from ETH Zürich in Switzerland, and will soon start his postdoctoral position at Institute of Quantum Optics and Quantum Information (IQOQI) in Innsbruck, Austria. His main research focus is on dissipation-induced dynamics in out-of-equilibrium many-body systems, particularly in the specific examples of cavity-BEC systems and superconductors. He is also a co-developer of the numerical software MCTDH-X for solving many-body Schrödinger equation in continuum. He received his Master degree at ETH Zürich in 2018, and his Bachelor degree in Sun Yat-sen University in 2016.

主  持  人：范桁  研究员

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