Primary thermometry triad at 6 mK in mesoscopic circuits

Z. Iftikhar 1 A. Anthore 2 S. Jezouin 3, 4 F. Parmentier 5 Y. Jin 6 A. Cavanna 1 A. Ouerghi 1 U. Gennser 7 F. Pierre 8
2 QUANTRONICS - Quantronics Group
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
3 QUANTIC - QUANTum Information Circuits
ENS Paris - École normale supérieure - Paris, UPMC - Université Pierre et Marie Curie - Paris 6, MINES ParisTech - École nationale supérieure des mines de Paris, Inria de Paris
5 GNE - Groupe Nano-Electronique
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : Quantum physics emerge and develop as temperature is reduced. Although mesoscopic electrical circuits constitute an outstanding platform to explore quantum behaviour, the challenge in cooling the electrons impedes their potential. The strong coupling of such micrometre-scale devices with the measurement lines, combined with the weak coupling to the substrate, makes them extremely difficult to thermalize below 10 mK and imposes in situ thermometers. Here we demonstrate electronic quantum transport at 6 mK in micrometre-scale mesoscopic circuits. The thermometry methods are established by the comparison of three in situ primary thermometers, each involving a different underlying physics. The employed combination of quantum shot noise, quantum back action of a resistive circuit and conductance oscillations of a single-electron transistor covers a remarkably broad spectrum of mesoscopic phenomena. The experiment, performed in vacuum using a standard cryogen-free dilution refrigerator, paves the way towards the sub-millikelvin range with additional thermalization and refrigeration techniques.
Type de document :
Article dans une revue
Nature Communications, Nature Publishing Group, 2016, 7, 〈10.1038/ncomms12908〉
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https://hal-cea.archives-ouvertes.fr/cea-01485943
Contributeur : Dominique Girard <>
Soumis le : jeudi 9 mars 2017 - 15:22:38
Dernière modification le : jeudi 11 janvier 2018 - 16:18:02

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Z. Iftikhar, A. Anthore, S. Jezouin, F. Parmentier, Y. Jin, et al.. Primary thermometry triad at 6 mK in mesoscopic circuits. Nature Communications, Nature Publishing Group, 2016, 7, 〈10.1038/ncomms12908〉. 〈cea-01485943〉

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