Invasiveness of non-equilibrium quantum thermometry
- URL: http://arxiv.org/abs/2305.03436v1
- Date: Fri, 5 May 2023 11:16:17 GMT
- Title: Invasiveness of non-equilibrium quantum thermometry
- Authors: Francesco Albarelli, Matteo G. A. Paris, Bassano Vacchini, Andrea
Smirne
- Abstract summary: We show that there is a non-trivial relation between the information on the temperature gained by a quantum probe and the heat absorbed by the sample due to the interaction.
Our results also represent a first step towards the analysis of the thermodynamic and energetic cost of quantum thermometry.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: One of the main advantages expected from using quantum probes as thermometers
is non invasiveness, i.e., a negligible perturbation to the thermal sample.
However, invasiveness is rarely investigated explicitly. Here, focusing on a
pure-dephasing spin probe in a bosonic sample, we show that there is a
non-trivial relation between the information on the temperature gained by a
quantum probe and the heat absorbed by the sample due to the interaction. We
show that optimizing over the probing time, i.e. considering a time-optimal
probing scheme, also has the benefit of limiting the heat absorbed by the
sample in each shot of the experiment. For such time-optimal protocols, we show
that it is advantageous to have very strong probe-sample coupling, since in
this regime the accuracy increases linearly with the coupling strength, while
the amount of heat per shot saturates to a finite value. Since in
pure-dephasing models the absorbed heat corresponds to the external work needed
to couple and decouple the probe and the sample, our results also represent a
first step towards the analysis of the thermodynamic and energetic cost of
quantum thermometry.
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