Work

Fast scrambling dynamics and many-body localization transition in an all-to-all disordered quantum spin model

Year: 2022

Type: article

Abstract: We study the quantum thermalization and information scrambling dynamics of an experimentally realizable quantum spin model with homogeneous XX-type all-to-all interactions and random local potentials. We identify the thermalization-localization transition by changing the disorder strength, under a proper all-to-all interaction strength. The scrambling dynamics in the localization phase shows behaviors that are distinct from that of local models. The operator scrambling grows almost equally fast in the two phases. In the thermal phase, we show that fast scrambling is exhibited without appealing to the semiclassical limit. We also briefly discuss the experimental realization of the model using superconducting qubit quantum simulators.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.106.024309

Authors: Shang-Shu Li, Rui-Zhen Huang, Heng Fan

Institutions: Chinese Academy of Sciences, Institute of Physics, University of Chinese Academy of Sciences, Kavli Institute for Theoretical Sciences, Songshan Lake Materials Laboratory

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green