Dipolar bosons on an optical lattice ring

Year: 2011

Authors: Maik M., Buonsante P., Vezzani A., Zakrzewski J.

Autors Affiliation: Instytut Fizyki imienia Mariana Smoluchowskiego, Uniwersytet Jagielloński, ulica Reymonta 4, PL-30-059 Kraków, Poland; Dipartimento di Fisica, Universitą degli Studi di Parma, Viale G.P. Usberti n.7/A, IT-43100 Parma, Italy; Centro S3, CNR Istituto di Nanoscienze, via Campi 213/a, IT-41100 Modena, Italy; Mark Kac Complex Systems Research Center, Uniwersytet Jagielloński, ulica Reymonta 4, PL-30-059 Kraków, Poland

Abstract: We consider an ultrasmall system of polarized bosons on an optical lattice with a ring topology, interacting via long-range dipole-dipole interactions. Dipoles polarized perpendicular to the plane of the ring reveal sharp transitions between different density-wave phases. As the strength of the dipolar interactions is varied, the behavior of the transitions is first-order-like. For dipoles polarized in the plane of the ring, the transitions between possible phases show pronounced sensitivity to the lattice depth. The abundance of possible configurations may be useful for quantum-information applications.

Journal/Review: PHYSICAL REVIEW A

Volume: 84 (5)      Pages from: 053615  to: 053615

More Information: M.M. and J.Z. gratefully acknowledge enlightening discussions with K. Sacha at early stages of this work. This work was supported by the International Ph.D. Projects Programme of the Foundation for Polish Science within the European Regional Development Fund of the European Union, Agreement No. MPD/2009/6. J.Z. also acknowledges support by the Polish Government scientific funds for 2009-2012 for this research project.
DOI: 10.1103/PhysRevA.84.053615

ImpactFactor: 2.878
Citations: 18
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