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Non-galvanic calibration and operation of a quantum dot thermometer

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Non-galvanic calibration and operation of a quantum dot thermometer. / Chawner, Joshua; Barraud, S.; Gonzalez-Zalba, M. F. et al.
In: Physical Review Applied, Vol. 15, No. 3, 034044, 16.03.2021.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Chawner J, Barraud S, Gonzalez-Zalba MF, Holt S, Laird E, Pashkin Y et al. Non-galvanic calibration and operation of a quantum dot thermometer. Physical Review Applied. 2021 Mar 16;15(3):034044. doi: 10.1103/PhysRevApplied.15.034044

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Chawner, Joshua ; Barraud, S. ; Gonzalez-Zalba, M. F. et al. / Non-galvanic calibration and operation of a quantum dot thermometer. In: Physical Review Applied. 2021 ; Vol. 15, No. 3.

Bibtex

@article{ba1a24f457da4220b12e61c8f037991b,
title = "Non-galvanic calibration and operation of a quantum dot thermometer",
abstract = "A cryogenic quantum dot thermometer is calibrated and operated using only a single nongalvanic gate connection. The thermometer is probed with radio-frequency reflectometry and calibrated by fitting a physical model to the phase of the reflected radio-frequency signal taken at temperatures across a small range. Thermometry of the source and drain reservoirs of the dot is then performed by fitting the calibrated physical model to new phase data. The thermometer can operate at the transition between thermally broadened and lifetime-broadened regimes and outside the temperatures used in calibration. Electron thermometry is performed at temperatures between 3.0K and 1.0K, in both a 1-K cryostat and a dilution refrigerator. In principle, the experimental setup enables fast electron-temperature readout with a sensitivity of 4.0±0.3mK/√Hz, at kelvin temperatures. The nongalvanic calibration process gives a readout of physical parameters, such as the quantum dot lever arm. The demodulator used for reflectometry readout is readily available at relatively low cost.",
author = "Joshua Chawner and S. Barraud and Gonzalez-Zalba, {M. F.} and Stephen Holt and Edward Laird and Yuri Pashkin and Jonathan Prance",
note = "{\textcopyright} 2021 American Physical Society ",
year = "2021",
month = mar,
day = "16",
doi = "10.1103/PhysRevApplied.15.034044",
language = "English",
volume = "15",
journal = "Physical Review Applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Non-galvanic calibration and operation of a quantum dot thermometer

AU - Chawner, Joshua

AU - Barraud, S.

AU - Gonzalez-Zalba, M. F.

AU - Holt, Stephen

AU - Laird, Edward

AU - Pashkin, Yuri

AU - Prance, Jonathan

N1 - © 2021 American Physical Society

PY - 2021/3/16

Y1 - 2021/3/16

N2 - A cryogenic quantum dot thermometer is calibrated and operated using only a single nongalvanic gate connection. The thermometer is probed with radio-frequency reflectometry and calibrated by fitting a physical model to the phase of the reflected radio-frequency signal taken at temperatures across a small range. Thermometry of the source and drain reservoirs of the dot is then performed by fitting the calibrated physical model to new phase data. The thermometer can operate at the transition between thermally broadened and lifetime-broadened regimes and outside the temperatures used in calibration. Electron thermometry is performed at temperatures between 3.0K and 1.0K, in both a 1-K cryostat and a dilution refrigerator. In principle, the experimental setup enables fast electron-temperature readout with a sensitivity of 4.0±0.3mK/√Hz, at kelvin temperatures. The nongalvanic calibration process gives a readout of physical parameters, such as the quantum dot lever arm. The demodulator used for reflectometry readout is readily available at relatively low cost.

AB - A cryogenic quantum dot thermometer is calibrated and operated using only a single nongalvanic gate connection. The thermometer is probed with radio-frequency reflectometry and calibrated by fitting a physical model to the phase of the reflected radio-frequency signal taken at temperatures across a small range. Thermometry of the source and drain reservoirs of the dot is then performed by fitting the calibrated physical model to new phase data. The thermometer can operate at the transition between thermally broadened and lifetime-broadened regimes and outside the temperatures used in calibration. Electron thermometry is performed at temperatures between 3.0K and 1.0K, in both a 1-K cryostat and a dilution refrigerator. In principle, the experimental setup enables fast electron-temperature readout with a sensitivity of 4.0±0.3mK/√Hz, at kelvin temperatures. The nongalvanic calibration process gives a readout of physical parameters, such as the quantum dot lever arm. The demodulator used for reflectometry readout is readily available at relatively low cost.

U2 - 10.1103/PhysRevApplied.15.034044

DO - 10.1103/PhysRevApplied.15.034044

M3 - Journal article

VL - 15

JO - Physical Review Applied

JF - Physical Review Applied

SN - 2331-7019

IS - 3

M1 - 034044

ER -