Perfect quantum state transfer through a chaotic spin chain via many-body scars
Year: 2025
Type: article
Abstract: Quantum many-body scars (QMBSs) offer a mechanism for weak ergodicity breaking, enabling nonthermal dynamics to persist in a chaotic many-body system. While most studies of QMBS focus on anomalous eigenstate properties or long-lived revivals of local observables, their potential for quantum information processing remains largely unexplored. In this work, we demonstrate that perfect quantum state transfer can be achieved in a strongly interacting, quantum chaotic spin chain by exploiting a sparse set of QMBS eigenstates embedded within an otherwise thermal spectrum. These results show that QMBSs in chaotic many-body systems may be harnessed for information transport tasks typically associated with integrable models.
DOI: 10.1103/hdy9-dr9m
Authors: Shane Dooley, Luke Johnston, Patrick Gormley, Beth Campbell
Institution: Dublin Institute For Advanced Studies
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funder: Research Ireland
OpenAlex ID: W4416261004