Accelerating many-body entanglement generation by dipolar interactions in the Bose-Hubbard model

The spin-squeezing protocols allow the dynamical generation of massively correlated quantum many-body states, which can be utilized in entanglement-enhanced metrology and technologies. We study a quantum simu-lator generating twisting dynamics realized in a two-component Bose-Hubbard model with dipolar interactions. We show that the interplay of contact and long-range dipolar interactions between atoms in the superfluid phase activates the anisotropic two-axis countertwisting mechanism, accelerating the spin-squeezing dynamics and allowing the Heisenberg-limited accuracy in spectroscopic measurements.

Automated summary

Spin-squeezing protocols enable the generation of highly correlated quantum many-body states, which can enhance entanglement-inspired metrology and technologies. We investigate a quantum simulator utilizing twisting dynamics in a two-component Bose-Hubbard model with dipolar interactions. Our results demonstrate that the interplay of contact and long-range dipolar interactions in the superfluid phase activates an anisotropic two-axis countertwisting mechanism, accelerating spin-squeezing dynamics and achieving Heisenberg-limited accuracy in spectroscopic measurements.