Long-living coherence in 2D and 3D disordered dipolar-coupled spin systems under strong periodic driving
It has been found recently that a 3D dipolar-coupled network of electronic spins under periodic driving shows long-living coherence and signatures of the time-crystal-like order. Similar behavior has also been observed and studied before, in the 3D networks of the nuclear spins subjected to the spin-echo pulse trains, and has been used for 70,000-fold improvement in NMR spectroscopy. We numerically simulated these effects in 2D and 3D dipolar-coupled spin systems, directly solving the time-dependent Schrodinger equation. We show that the many-body localization is only marginally related to the appearance of the slowly decaying coherence. We identify the simplest Hamiltonian where the long-living coherence are observed in agreement with experiments, and the relevant parameters for 2D spin systems, to enable application of the long-living coherence in advanced sensing and metrology.Work supported by DARPA DRINQS program.
APS March Meeting Abstracts
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