A P Tonel | Searcharxiv

arXiv2025

Tunneling control of dipolar boson in triple well circuit via dipole polarization orientation and quantum sensing application

Precise control of the transport of ultra-cold atoms in optical lattices is essential for the exploration of quantum phenomena and the development of advanced quantum technologies. Harnessing the distinctive characteristics of the system near integrability, we investigate the tunneling control of dipolar bosons confined within a triple-well circuit via dipole polarization orientation. Based on this control mechanism, we propose a quantum magnetic compass that shows sensitivity beyond the Heisenberg limit to small variations in the orientation of magnetic fields, making it a promising candidate for sensing applications.

cond-mat.quant-gas↗

arXiv2016

Quantum integrable multi-well tunneling models

In this work we present a general construction of integrable models for boson tunneling in multi-well systems. We show how the models may be derived through the Quantum Inverse Scattering Method and solved by algebraic Bethe ansatz means. From the transfer matrix we find only two conserved operators. However, we construct additional conserved operators through a different method. As a consequence the models admit multiple pseudovacua, each associated to a set of Bethe ansatz equations. We show that all sets of Bethe ansatz equations are needed to obtain a complete set of eigenstates.

math-ph↗