Description:

Efforts to achieve coherent control of complex quantum matter have  reshaped multiple disciplines at the foundation of quantum materials discovery and quantum information science. Terahertz (THz) coherent nonlinear spectroscopy has recently emerged as a powerful approach that brings multidimensional resolution to the ultrafast spectral–temporal dynamics of strongly driven phases of matter, enabling unprecedented access and control to coherent many-body dynamics and multi-order correlations. In this talk, I will highlight our recent advances in THz coherent control of quantum condensates, including photon-echo signatures of Higgs collective modes in superconductors and exciton-amplified, extreme Floquet phononics in a candidate excitonic condensate. I will conclude by discussing future opportunities to advance THz multidimensional coherent spectroscopy—both in instrumentation and experimental strategies—and how these developments open new frontiers for quantum control and sensing.

Jigang Wang, Professor, Iowa State University

Host: Venkat Chandrasekhar