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

Abstract

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 simulator 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 counter-twisting mechanism, accelerating the spin squeezing dynamics and allowing the Heisenberg-limited accuracy in spectroscopic measurements.

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• Generation of scalable many-body Bell correlations in spin chains with short-range two-body interactions
• Introduction to quantum entanglement in many-body systems
• Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
• Inherent quantum resources in stationary spin chains
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• Conditional Entanglement Amplification via Non-Hermitian Superradiant Dynamics
• Coherent Generation and Protection of Anticoherent Spin States