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编辑:phyjd 时间:2018年12月24日 访问次数:197

时间: 20181226日下午15:00 -16:00

地点: 教十二楼201

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Dynamics of entanglement in random unitary circuit

Tian-ci Zhou (周天赐)

Kavli Institute for Theoretical Physics

University of California at Santa Barbara

Abstract

We systematically study the dynamics of quantum entanglement in a random unitary circuit, which is a minimal model of chaotic systems with local interactions. The problem maps to the statistical mechanics of interacting domain walls, where entanglement is the free energy. We find that the linear growth of R\'enyi entropies in a global quench is determined by the line tension of the domain wall, and their fluctuation obeys the universal Kadar-Parisi-Zhang scaling due the replica interaction. This picture allows us to understand the behaviors of entanglement in systems at the strongly chaotic limit.

个人简介

Dr. Zhou graduated in Department of Physics, Zhejiang University in June, 2012, and received his Ph D from University of Illinois at Urbana-Champaign in Aug.,2018. Dr. Zhou is currently a postdoctoral researcher at KITP working on non-equilibrium dynamics, including quantum quench, entanglement, and recently quantum chaos, etc.