ORCID Profile
0000-0002-7154-5417
Current Organisation
Universität Hamburg
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: American Physical Society (APS)
Date: 23-09-2019
Publisher: American Physical Society (APS)
Date: 23-08-2023
Publisher: SPIE
Date: 25-02-2020
DOI: 10.1117/12.2552602
Publisher: American Physical Society (APS)
Date: 19-05-2021
Publisher: MDPI AG
Date: 24-03-2022
DOI: 10.3390/SYM14040666
Abstract: We investigate the emergence of different effective geometries in stochastic Clifford circuits with sparse coupling. By changing the probability distribution for choosing two-site gates as a function of distance, we generate sparse interactions that either decay or grow with distance as a function of a single tunable parameter. Tuning this parameter reveals three distinct regimes of geometry for the spreading of correlations and growth of entanglement in the system. We observe linear geometry for short-range interactions, treelike geometry on a sparse coupling graph for long-range interactions, and an intermediate fast scrambling regime at the crossover point between the linear and treelike geometries. This transition in geometry is revealed in calculations of the subsystem entanglement entropy and tripartite mutual information. We also study emergent lightcones that govern these effective geometries by teleporting a single qubit of information from an input qubit to an output qubit. These tools help to analyze distinct geometries arising in dynamics and correlation spreading in quantum many-body systems.
Publisher: American Physical Society (APS)
Date: 07-07-2020
Publisher: American Physical Society (APS)
Date: 03-03-2022
No related grants have been discovered for Tomohiro Hashizume.