Efficient quantum information probes of nonequilibrium quantum criticality

Miguel M. Oliveira*, Pedro Ribeiro*, Stefan Kirchner*

*此作品的通信作者

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Quantum information-based approaches, in particular the fidelity, have been flexible probes for phase boundaries of quantum matter. A major hurdle to a more widespread application of fidelity and other quantum information measures to strongly correlated quantum materials is the inaccessibility of the fidelity susceptibility to most state-of-the-art numerical methods. This is particularly apparent away from equilibrium where, at present, no general critical theory is available and many standard techniques fail. Motivated by the usefulness of quantum information-based measures we show that a widely accessible quantity, the single-particle affinity, is able to serve as a versatile instrument to identify phase transitions beyond Landau’s paradigm. We demonstrate that it not only is able to signal previously identified nonequilibrium phase transitions but also has the potential to detect hitherto unknown phases in models of quantum matter far from equilibrium.

原文English
文章編號6
期刊npj Quantum Information
9
發行號1
DOIs
出版狀態Published - 12月 2023

指紋

深入研究「Efficient quantum information probes of nonequilibrium quantum criticality」主題。共同形成了獨特的指紋。

引用此