Thermometry of bosonic mixtures in Optical Lattices via Demixing

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.

10 pages, 6 figures, Supplemental Material

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Cited by in corpus (6)

• Residual entropy and critical behavior of two interacting boson species in a double well
• Phase transitions of the coherently coupled two-component Bose gas in a square optical lattice
• Multiworm algorithm quantum Monte Carlo
• Phase Diagrams of Antiferromagnetic Spin-1 Bosons on Square Optical Lattice with the Quadratic Zeeman Effect
• Entangling lattice-trapped bosons with a free impurity: impact on stationary and dynamical properties
• Quasiparticle spectra of mixtures of dipolar and non-dipolar condensates at zero and finite temperatures