Emergence of X states in a quantum impurity model

Files

PhysRevResearch.7.L022027.pdf (1.06 MB)
 sm.pdf (475.3 KB)

Links to Files

https://link.aps.org/doi/10.1103/PhysRevResearch.7.L022027

Permanent Link

https://doi.org/10.1103/PhysRevResearch.7.L022027
 http://hdl.handle.net/11603/38804

Collections

UMBC Faculty Collection
UMBC Physics Department
UMBC Student Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0003-0504-6932
 https://orcid.org/0000-0002-2003-078X

Date

2025-05-02

Type of Work

journal articles
Text

Department

Program

Citation of Original Publication

Cavalcante, Moallison F., Marcus V. S. Bonança, Eduardo Miranda, and Sebastian Deffner. “Emergence of X States in a Quantum Impurity Model.” Physical Review Research 7, no. 2 (May 2, 2025): L022027. https://doi.org/10.1103/PhysRevResearch.7.L022027.

Rights

Attribution 4.0 International

Subjects

UMBC Quantum Thermodynamics Group

Abstract

In the present work, we demonstrate the emergence of X states in the long-time response of a locally perturbed many-body quantum impurity model. The emergence of the double-qubit state is heralded by the lack of decay of the response function as well as the out-of-time order correlator, signifying the trapping of excitations and hence information in edge modes. Surprisingly, after carrying out a quantum information theory characterization, we show that such states exhibit genuine quantum correlations.