Ground-state entanglement of spin-1 bosons undergoing superexchange interactions in optical superlattices

Abstract

We discuss a model with ultra-cold atoms confined in optical superlattices. In particular, we study the ground-state properties of two spin-1 bosons trapped in a double-well potential. Depending on the external magnetic field and biquadratic interactions different phases of magnetic order are realized. Applying von Neumann entropy and number of relevant orbitals, we quantify the bipartite entanglement between particles. Changing the values of the parameters determining superlattices, we can switch the system between differently entangled states.

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Cited by in corpus (5)

• One-dimensional mixtures of several ultracold atoms: a review
• Quantum correlations and entanglement in a model comprised of a short chain of nonlinear oscillators
• Bipartite correlations in quantum resonance states
• Novel hermetically sealed device to realize unconventional phonon blockade at near-micron dimensions and milli Kelvin temperatures
• The Entanglement Level and the Detection of Quantum Data Transfer Correctness in Short Qutrit Spin Chains