[Seminar] Prof. Han Yan "Designing Light in an Artificial Universe"

Speaker

Prof. Han Yan / Institute for Solid State Physics, The University of Tokyo

Title

Designing Light in an Artificial Universe

Abstract

Quantum spin ice (QSI) is a lattice spin-model realization of the full-fledged quantum electrodynamics including photons, electric charges and magnetic monopoles. As one of the most interesting quantum spin liquids, a significant amount of experimental and theoretical investigation has been done in this field. I will present an overview of the quantum spin ice physics and also discuss our recent ongoing work on how in the so-called dipole-octupole QSI, one can experimentally have clean control of the dynamics of its emergent QED, including transition between different symmetry-enriched phases, tuning the dispersion of photons and fine-structure constants etc. All of this can be achieved in one of the simplest experiments — turning on the external magnetic field in the right direction.

Biography

Han Yan is an Assistant Professor at the University of Tokyo, Institute for Solid State Physics. He did his PhD at Okinawa Institute of Science and Technology under the supervision of Prof. Nic Shannon, and then became a Junior Fellow in Rice Academy at Rice University from 2021 to 2023. He joined the University of Tokyo in October 2023 as an Assistant Professor in the group of Prof. Masaki Oshikawa. He is interested in quantum many-body physics, especially their connection with high-energy theory.

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