Tunable momentum pair creation of spin excitations in dipolar bilayers

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Abstract

We study the temporal growth and spatial propagation of quantum correlations in a two-dimensional bilayer realizing a spin-1/2 quantum XXZ model with couplings mediated by long-range and anisotropic dipolar interactions. Starting with an initial state consisting of spins with opposite magnetization in each of the layers, we predict a dynamic instability that results, at short times, in the creation of correlated pairs of excitations at specific momenta at exponentially fast rates and entanglement between spatially separated modes.

Year of Publication
2023
Date Published
2023-07
Journal Title
Physical Review A
Volume
108
Start Page or Article ID (correct)
013313
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