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arXiv · 2005.02404

Non-equilibrium readiness and accuracy of Gaussian Quantum Thermometers

Luca Mancino·Marco G. Genoni·Marco Barbieri·Mauro Paternostro
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Abstract

The dimensionality of a thermometer is key in the design of quantum thermometry schemes. In general, the phenomenology that is typical of finite-dimensional quantum thermometry does not apply to infinite dimensional ones. We analyse the dynamical and metrological features of non-equilibrium Gaussian Quantum Thermometers: on one hand, we highlight how quantum entanglement can enhance the readiness of composite Gaussian thermometers; on the other hand, we show that non-equilibrium conditions do not guarantee the best sensitivities in temperature estimation, thus suggesting the reassessment of the working principles of quantum thermometry.

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Luca Mancino, Marco G. Genoni, Marco Barbieri, Mauro Paternostro. 2020-05-05. Non-equilibrium readiness and accuracy of Gaussian Quantum Thermometers. https://doi.org/10.1103/physrevresearch.2.033498

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