Symmetry Protected Topological Order in Open Quantum Systems

Autor(en)

Caroline de Groot, Alex Turzillo, Norbert Schuch

Abstrakt

We systematically investigate the robustness of symmetry protected topological (SPT) order in open quantum systems by studying the evolution of string order parameters and other probes under noisy channels. We find that one-dimensional SPT order is robust against noisy couplings to the environment that satisfy a strong symmetry condition, while it is destabilized by noise that satisfies only a weak symmetry condition, which generalizes the notion of symmetry for closed systems. We also discuss "transmutation" of SPT phases into other SPT phases of equal or lesser complexity, under noisy channels that satisfy twisted versions of the strong symmetry condition.

Organisation(en)

Institut für Mathematik, Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Max-Planck-Institut für Quantenoptik, Munich Center for Quantum Science and Technology (MCQST)

Journal

Quantum

Band

6

Seiten

1-39

Anzahl der Seiten

39

ISSN

2521-327X

DOI

https://doi.org/10.22331/q-2022-11-10-856

Publikationsdatum

11-2022

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103015 Kondensierte Materie, 101028 Mathematische Modellierung

Schlagwörter

ASJC Scopus Sachgebiete

Atomic and Molecular Physics, and Optics, Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9750ac0f-adc3-46e9-afd6-319590e731bb