Magnetic Resonance
Magnetic Resonance
MR
Articles | Volume 1, issue 2
Articles | Volume 1, issue 2
https://doi.org/10.5194/mr-1-315-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/mr-1-315-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 1, issue 2
Research article
 | 
17 Dec 2020
Research article |  | 17 Dec 2020

Hyperfine spectroscopy in a quantum-limited spectrometer

Sebastian Probst, Gengli Zhang, Miloš Rančić, Vishal Ranjan, Marianne Le Dantec, Zhonghan Zhang, Bartolo Albanese, Andrin Doll, Ren Bao Liu, John Morton, Thierry Chanelière, Philippe Goldner, Denis Vion, Daniel Esteve, and Patrice Bertet

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Short summary
Electron spin detection was recently demonstrated using superconducting circuits and amplifiers at millikelvin temperatures, reaching the quantum limit of sensitivity. We use such a setup to measure electron-spin-echo envelope modulation on a small number of electron spins, in two model systems: bismuth donors in silicon and erbium ions doped in CaWO4 (calcium tungstate). Our results are a proof of principle that hyperfine spectroscopy is feasible with these quantum-limited ESR spectrometers.
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