Publications by authors named "Eloisa Cuestas"

Heat engines convert thermal energy into mechanical work both in the classical and quantum regimes. However, quantum theory offers genuine non-classical forms of energy, different from heat, which so far have not been exploited in cyclic engines. Here we experimentally realize a quantum many-body engine fuelled by the energy difference between fermionic and bosonic ensembles of ultracold particles that follows from the Pauli exclusion principle.

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The study of entanglement in systems composed of identical particles raises interesting challenges with far-reaching implications in both, our fundamental understanding of the physics of composite quantum systems, and our capability of exploiting quantum indistinguishability as a resource in quantum information theory. Impressive theoretical and experimental advances have been made in the last decades that bring us closer to a deeper comprehension and to a better control of entanglement. Yet, when it involves composites of indistinguishable quantum systems, the very meaning of entanglement, and hence its characterization, still finds controversy and lacks a widely accepted definition.

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By including the effect of a trap with characteristic energy given by the Fermi temperaturein a two-body two-channel model for Feshbach resonances, we reproduce the measured binding energy of ultracold molecules in aK atomic Fermi gas. We also reproduce the experimental closed-channel fractionacross the BEC-BCS crossover and into the BCS regime of aLi atomic Fermi gas. We obtain the expected behaviorZ∝TFat unitarity, together with the recently measured proportionality constant.

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Objectives: Measurement of height is essential in the anthropometric assessment of growth and nutritional status. In some conditions, height measurement may be difficult or impossible. Proxy measurement such as knee height (KH) have been proposed to predict stature in such cases, but reference percentile ranges and charts for healthy, well-nourished children are currently unavailable.

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