Quantum Matter Seminar - Tarun Grover (UCSD) - Space-time Duality Between Localization and Quantum Zeno Effect

Tarun Grover (UCSD) 5/3/21 Quantum Matter seminar speaker
May 3, 2021
11:00AM - 12:00PM
Zoom webinar

Date Range
Add to Calendar 2021-05-03 11:00:00 2021-05-03 12:00:00 Quantum Matter Seminar - Tarun Grover (UCSD) - Space-time Duality Between Localization and Quantum Zeno Effect Quantum many-body systems typically self-thermalize under time-evolution, leading to a state of maximal entanglement allowed by the underlying symmetries. A well known exception is the phenomena of localization in which quenched spatial disorder can lead to non-ergodic behavior. More recently, it has been found that the 'quantum zeno effect' offers an alternate route to impede entanglement growth -- continuously monitoring a system by an external observer destroys entanglement and can lead to a rich variety of non-ergodic states. In this talk, I will present an idea that relates these two distinct ways of obtaining non-thermal states. In particular, I will discuss how a 'space-time rotation' of quantum circuits, that amounts to the interchange of space and time coordinates, maps a system undergoing localization transition to a system that displays entanglement transition due to the quantum Zeno effect.   Reference: https://arxiv.org/abs/2103.06356   Zoom link to talk: https://osu.zoom.us/j/96224641621 password: 3.14159 Zoom webinar Department of Physics physics@osu.edu America/New_York public

Quantum many-body systems typically self-thermalize under time-evolution, leading to a state of maximal entanglement allowed by the underlying symmetries. A well known exception is the phenomena of localization in which quenched spatial disorder can lead to non-ergodic behavior. More recently, it has been found that the 'quantum zeno effect' offers an alternate route to impede entanglement growth -- continuously monitoring a system by an external observer destroys entanglement and can lead to a rich variety of non-ergodic states. In this talk, I will present an idea that relates these two distinct ways of obtaining non-thermal states. In particular, I will discuss how a 'space-time rotation' of quantum circuits, that amounts to the interchange of space and time coordinates, maps a system undergoing localization transition to a system that displays entanglement transition due to the quantum Zeno effect.

 

Reference: https://arxiv.org/abs/2103.06356

 

Zoom link to talk: https://osu.zoom.us/j/96224641621

password: 3.14159