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Abstract: Quantum simulation is a highly ambitious program in cold atom researchcurrently being pursued in laboratories worldwide. The goal is to use coldatoms in optical lattice to simulate models for unsolved strongly correlatedsystems, so as to deduce their properties directly from experimental data. Animportant step in this effort is to determine the temperature of the system,which is essential for deducing all thermodynamic functions. This step,however, remains difficult for lattice systems at the moment. Here, we proposea method based on a generalized fluctuation-dissipation theorem. It does notreply on numerical simulations and is a universal thermometry for all quantumgases systems including mixtures and spinor gases. It is also unaffected byphoton shot noise.



Author: Qi Zhou, Tin-Lun Ho

Source: https://arxiv.org/







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