Work

Tuning the quantum Mpemba effect in an isolated system by initial-state engineering

Year: 2025

Type: article

Abstract: We investigate the quantum Mpemba effect (QME) in isolated, non-integrable quantum systems, where relaxation dynamics depend on structure of the initial states. By analyzing the distribution of initial states across symmetrical subspaces, we identify a tunable mechanism that influences the emergence of QME, showing faster relaxation from certain out-of-equilibrium states. Additionally, we propose an experimentally realizable quantum circuit, which requires no complex controls on quantum simulator platforms and serves to verify our theoretical predictions. These results establish symmetry-resolved state engineering as a practical tool for manipulating non-equilibrium quantum dynamics.

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

DOI: 10.1103/yzjd-pk8h

Authors: Yi-Han Yu, Tian-Ren Jin, Lv Zhang, Kai Xu, Heng Fan

Institutions: Chinese Academy of Sciences, Institute of Physics, University of Chinese Academy of Sciences, Songshan Lake Materials Laboratory, Beijing Academy of Quantum Information Sciences

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

Funders: Asian Office of Aerospace Research and Development, National Natural Science Foundation of China, Beijing Nova Program, Office of Naval Research