Thermometry of bosonic mixtures in Optical Lattices via Demixing

Year: 2017

Authors: Lingua F., Capogrosso-Sansone B., Minardi F., Penna V.

Autors Affiliation: Department of Applied Science and Technology and U.d.r., CNISM, Politecnico di Torino, Torino, I-10129, Italy; Department of Physics, Clark University, Worcester, MA 01610, United States; Istituto Nazionale di Ottica (INO-CNR), Sesto Fiorentino, I-50019, Italy; European Laboratory for Non-Linear Spectroscopy (LENS), Dipartimento di Fisica, Università di Firenze, I-50019, Sesto Fiorentino, Italy

Abstract: Motivated by recent experiments and theoretical investigations on binary mixtures, we investigate the miscible-immiscible transition at finite temperature by means of Quantum Monte Carlo. Based on the observation that the segregated phase is strongly affected by temperature, we propose to use the degree of demixing for thermometry of a binary bosonic mixture trapped in an optical lattice. We show that the proposed method is especially sensitive at low temperatures, of the order of the tunnelling amplitude, and therefore is particularly suitable in the regime where quantum magnetism is expected.


Volume: 7      Pages from: 5105-1  to: 5105-9

KeyWords: Quantum-gas microscope; Fermi-Hubbard model; Mott insulator; Atoms; State; Drug mixture; Low temperature; Magnetism; Miscibility; Theoretical model; Thermometry
DOI: 10.1038/s41598-017-05353-6

Citations: 6
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