12/04
2023
Seminar
- Title题目 Entanglement phase transitions in disordered and Floquet non-Hermitian systems
- Speaker报告人 周龙文 (中国海洋大学)
- Date日期 2023年12月4日 14:30-16:30
- Venue地点 南楼6520
Abstract摘要
Along with the increase of measurement rates, the competition between unitary time evolution and projective measurements could prompt the steady state of a quantum many-body system to switch from a volume-law-entangled phase to a quantum Zeno phase with an area-law entanglement entropy (EE). In this talk, I will discuss our recent studies on such entanglement phase transitions in the context of non-Hermitian physics. In a one-dimensional static system with quasiperiodic non-Hermitian disorder, we found an abnormal log-law to area-law entanglement transition, which is mediated by a critical phase with a volume-law scaling in the steady-state EE. In a one-dimensional Floquet (periodically driven) system, we found alternated and reentrant entanglement transitions that can be induced and flexibly controlled by the cooperation between driving and gain/loss effects. These discoveries may have interesting implications for the understanding of quantum information dynamics and the simulation of quantum many-body systems with non-Hermitian effects.
Refs: arXiv:2309.00924; arXiv:2310.11351.
邀请人：
田矗舜 研究员
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