Topological order following a quantum quench

D.I. Tsomokos, A. Hamma, W. Zhang, S. Haas, R. Fazio

    Research output: Contribution to journalArticlepeer-review

    36 Citations (Scopus)
    47 Downloads (Pure)


    We determine the conditions under which topological order survives a rapid quantum quench. Specifically, we consider the case where a quantum spin system is prepared in the ground state of the toric code model and, after the quench, it evolves with a Hamiltonian that does not support topological order. We provide analytical results supported by numerical evidence for a variety of quench Hamiltonians. The robustness of topological order under nonequilibrium situations is tested by studying the topological entropy and a dynamical measure, which makes use of the similarity between partial density matrices obtained from different topological sectors.
    Original languageEnglish
    JournalPhysical Review A
    Issue number6
    Publication statusPublished - 2009


    Dive into the research topics of 'Topological order following a quantum quench'. Together they form a unique fingerprint.

    Cite this