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    Generating pairwise entanglement in periodically driven quantum spin chains with stochastic resetting

    Sinchan Ghosh1,*, Manas Kulkarni2,†, K. Sengupta1,‡, and Satya N. Majumdar3,§

    • *Contact author: sinchanghosh008@gmail.com
    • †Contact author: manas.kulkarni@icts.res.in
    • ‡Contact author: ksengupta1@gmail.com
    • §Contact author: satyanarayan.majumdar@cnrs.fr

    Phys. Rev. B 114, 144406 – Published 8 September, 2026

    DOI: https://doi.org/10.1103/k58k-tpy7

    Abstract

    We show that stochastic resetting may lead to finite entanglement between individual, spatially separated spins (pairwise entanglement) in the steady state of the spin chains driven periodically with frequency ωD. We find the presence of a critical resetting rate rc below which the steady state pairwise entanglement, measured via concurrence C, vanishes. We also identify an optimal resetting rate rm at which C becomes maximum. These critical and optimal rates exhibit a non-monotonic dependence on ωD. Our analysis demonstrates the existence of special drive frequencies at which rc vanishes and rm attains minima. We compute C in the presence of stochastic resetting using exact diagonalization for both the integrable XY model and non-integrable Rydberg spin chains, which demonstrate these features. Our numerical results match perturbative analytical expressions for the special drive frequencies in the large drive amplitude regime.

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