Magnon-Phonon Quantum Correlation Thermometry

Potts CA, Bittencourt VASV, Viola Kusminskiy S, Davis JP (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Applied American Physical Society

Book Volume: 13

Journal Issue: 6

DOI: 10.1103/PhysRevApplied.13.064001

Abstract

A large fraction of quantum science and technology requires low-temperature environments such as those afforded by dilution refrigerators. In these cryogenic environments, accurate thermometry can be difficult to implement, expensive, and often requires calibration to an external reference. Here, we theoretically propose a primary thermometer based on measurement of a hybrid system consisting of phonons coupled via a magnetostrictive interaction to magnons. Thermometry is based on a cross-correlation measurement in which the spectrum of back-action driven motion is used to scale the thermomechanical motion, providing a direct measurement of the phonon temperature independent of experimental parameters. Combined with a simple low-temperature compatible microwave cavity readout, this primary thermometer is expected to become a promising alternative for thermometry below 1 K.

Authors with CRIS profile

Silvia Viola Kusminskiy Lehrstuhl für Theoretische Physik

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light

Germany (DE) University of Alberta

Canada (CA)

How to cite

APA:

Potts, C.A., Bittencourt, V.A.S.V., Viola Kusminskiy, S., & Davis, J.P. (2020). Magnon-Phonon Quantum Correlation Thermometry. Physical Review Applied, 13(6). https://doi.org/10.1103/PhysRevApplied.13.064001

MLA:

Potts, C. A., et al. "Magnon-Phonon Quantum Correlation Thermometry." Physical Review Applied 13.6 (2020).

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