Magnon-Phonon Quantum Correlation Thermometry
| Autor: | Victor A. S. V. Bittencourt, C. A. Potts, John P. Davis, S. Viola Kusminskiy |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Physics::Instrumentation and Detectors Phonon Quantum correlation Magnon FOS: Physical sciences General Physics and Astronomy Physics - Applied Physics Applied Physics (physics.app-ph) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Computational physics Thermometer Hybrid system Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Calibration Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology Quantum information science Microwave cavity |
| Zdroj: | Physical Review Applied. 13 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.13.064001 |
| Popis: | 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 read-out, this primary thermometer is expected to become a popular thermometer for experiments below 1 K. Comment: 6 pages plus appendices, 10 figures |
| Databáze: | OpenAIRE |
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