Accelerating many-body entanglement generation by dipolar interactions in the Bose-Hubbard model
Marlena Dziurawiec, Tanausú Hernández Yanes, Marcin Płodzień, Mariusz Gajda, Maciej Lewenstein, Emilia Witkowska
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 countertwisting mechanism, accelerating the spin-squeezing dynamics and allowing the Heisenberg-limited accuracy in spectroscopic measurements.
Topics & Concepts
Bose–Hubbard modelPhysicsQuantum entanglementDipoleSuperfluidityQuantumSpin (aerodynamics)Quantum metrologyAnisotropyHubbard modelQuantum mechanicsQuantum discordSuperconductivityThermodynamicsCold Atom Physics and Bose-Einstein CondensatesAtomic and Subatomic Physics ResearchQuantum Information and Cryptography