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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

achine classification for probe-based quantum thermometr

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Author(s):
Luiz, Fabricio S. [1] ; de Oliveira, Jr., A. [2] ; Fanchini, Felipe F. [1] ; Landi, Gabriel T. [3]
Total Authors: 4
Affiliation:
[1] UNESP Univ Estadual Paulista, Fac Cilncias, BR-17033360 Bauru, SP - Brazil
[2] Jagiellonian Univ, Fac Phys Astron & Appl Comp Sci, PL-30348 Krakow - Poland
[3] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: PHYSICAL REVIEW A; v. 105, n. 2 FEB 10 2022.
Web of Science Citations: 0
Abstract

We consider probe-based quantum thermometry and show that machine classification can provide model independent estimation with quantifiable error assessment. Our approach is based on the k-nearest-neighbor algorithm. The machine is trained using data from either computer simulations or a calibration experiment. This yields a predictor which can be used to estimate the temperature from new observations. The algorithm is highly flexible and works with any kind of probe observable. It also allows one to incorporate experimental errors, as well as uncertainties about experimental parameters. We illustrate our method with an impurity thermometer in a Bose gas, as well as in the estimation of the thermal phonon number in the Rabi model. (AU)

FAPESP's process: 21/04655-8 - Machine learning and its applications in quantum physics: metrology, thermology, phase transitions and dynamical decoupling
Grantee:Felipe Fernandes Fanchini
Support Opportunities: Regular Research Grants
FAPESP's process: 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants
FAPESP's process: 17/07973-5 - Thermodynamics and information technologies with continuous variable quantum systems
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants
FAPESP's process: 18/12813-0 - Quantum thermodynamics of bosonic systems
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants