腾讯会议ID：385-894-070 会议密码：0113

主  持  人：周毅   研究员

联  系  人：傅琦（82649469）

Abstract:
The fractional quantum Hall effect (FQHE) provides a paradigmatic platform where strong interactions give rise to topological phases. Beyond their ground-state topological order, these systems host exotic charge and neutral excitations that can be understood within composite fermion (CF) theory and play the role of emergent quasiparticles with nontrivial statistics.

In this talk, I will briefly introduce composite fermions as emergent quasiparticles of correlated electrons and explain how their band structures can be accessed experimentally using scanning tunneling microscopy, where an injected or removed electron fractionalizes into multiple anyons. I will then focus on neutral excitations of p-wave–paired CF states, in particular the Moore–Read state, which is of central interest for topological quantum information. I will show that the two branches of neutral excitations—fermionic and bosonic—are related by an emergent supersymmetry for realistic interactions, revealing an unexpected unifying structure in the low-energy spectrum.

Finally, I will discuss how the Moore–Read state can be mapped onto an effective qubit chain and how its nonequilibrium quench dynamics can be simulated on a quantum processor, providing a bridge between topological phases of matter and programmable quantum simulation.

Brief CV of Dr. Songyang Pu:
Songyang Pu got his PhD from Pennsylvania State University in 2021 under the supervision of Prof. J. K. Jain. He worked as a postdoc at the University of Leeds and the University of Tennessee. He is currently a postdoc at Washington University in St. Louis. His research focuses on topology and correlation in quantum matter, including fractional quantum Hall effect, topological insulators, semimetals, superconductors etc.