Inter-species entanglement of Bose-Bose mixtures trapped in optical lattices

Authors

Wei Wang, The University of Oklahoma
Vittorio Penna, Politecnico di Torino
Barbara Capogrosso-Sansone, Clark UniversityFollow

Document Type

Article

Abstract

In the present work we discuss inter-species entanglement in Bose-Bose mixtures trapped in optical lattices. This work is motivated by the observation that, in the presence of a second component, the MI lobe shifts differently on the hole- and particle-side with respect to the Mott lobe of the single species system (Guglielmino et al 2010 Phys. Rev. A 82 021601; Capogrosso-Sansone et al 2011 Laser Phys. 21 1443). We use perturbation theory, formulated in a Hilbert space decomposed by means of lattice symmetries, in order to show that the nonuniform shift of the Mott lobe is a manifestation of inter-species entanglement which differs in the lowest excited states to remove and add a particle. Our results indicate that inter-species entanglement in mixtures can provide a new perspective in understanding quantum phase transitions. To validate our approach, we compare our results from perturbation theory with quantum Monte Carlo simulations.

Publication Title

New Journal of Physics

Publication Date

6-2016

Volume

18

Issue

6

ISSN

1367-2630

DOI

10.1088/1367-2630/18/6/063002

Keywords

Bose-Bose mixture, entanglement, inter-species, lattice symmetry, Mott-insulator, mutual information, phase boundary shift

Repository Citation

Wang, Wei; Penna, Vittorio; and Capogrosso-Sansone, Barbara, "Inter-species entanglement of Bose-Bose mixtures trapped in optical lattices" (2016). Physics. 78.
https://commons.clarku.edu/faculty_physics/78

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright Conditions

Wang, W., Penna, V., & Capogrosso-Sansone, B. (2016). Inter-species entanglement of Bose–Bose mixtures trapped in optical lattices. New Journal of Physics, 18(6), 063002.