Probing an electron-spin ensemble with squeezed microwave signals
P. Oehrl, F. Fesquet, K. E. Honasoge, M. Handschuh, A. Marx, R. Gross, K. G. Fedorov, H. Huebl
Fig. 4, panel (f)
External coupling rate $\kappa_{\mathrm{ext}}/2\pi$ at maximum transfer efficiency against the internal coupling rate $\kappa_{\mathrm{int}}/2\pi$, coloured by the cooperativity C on the printed 0.5 to 1.0 scale. The printed line is drawn as closely spaced dots.
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Provenance
This panel was reproduced from the authors' public data deposit (Zenodo: https://doi.org/10.5281/zenodo.21260844, CC BY 4.0). The plot shown here is re-rendered for interactive viewing and analysis. See the paper for the original figure and full scientific context.
License: CC BY 4.0.
Phys. Rev. A 114, 022603 (2026) · DOI: 10.1103/f81b-px1l · arXiv: 2512.17490
Other panels of Fig. 4: (a) (b) (c) (d) (e)
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