Achieving spin-squeezed states by quench dynamics in a quantum chain
نویسندگان
چکیده
We study the time evolution of spin squeezing in one-dimensional spin-1/2 XY model subject to a sudden quantum quench transverse magnetic field. The initial state is selected from ground phase diagram model, consisting ferro- and paramagnetic phases separated by critical value Our analysis, based on exact results for reveals that proper choice protocol, an unsqueezed can create squeezed nonequilibrium states. also identify nonanalyticity long-time average spin-squeezing parameter when quenching equilibrium point. This suggests define distinct how field redistributes fluctuations among components away equilibrium.
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2022
ISSN: ['1098-0121', '1550-235X', '1538-4489']
DOI: https://doi.org/10.1103/physrevb.105.024425