Sideband Spectroscopy in the Strong Driving Regime: Volcano Transparency and Sideband Anomaly
- URL: http://arxiv.org/abs/2508.14781v1
- Date: Wed, 20 Aug 2025 15:27:28 GMT
- Title: Sideband Spectroscopy in the Strong Driving Regime: Volcano Transparency and Sideband Anomaly
- Authors: Luka Antonic, Sergey Hazanov, Sergei Masis, Daniel Podolsky, Eyal Buks,
- Abstract summary: We study the response of a spin to two crossed magnetic fields: a strong and fast transverse field, and a weak and slow longitudinal field.<n>In the strong transverse driving regime, the emission spectrum has a characteristic volcano lineshape with a narrow central transparency region surrounded by asymmetric peaks.<n>In a sufficiently slow longitudinal field, the emission spectrum exhibits anomalous behavior, where the resonances in both the right and left sidebands lie on the same side of the central resonance.
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- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We study the response of a spin to two crossed magnetic fields: a strong and fast transverse field, and a weak and slow longitudinal field. We characterize the sideband response at the sum and the difference of driving frequencies over a broad range of parameters. In the strong transverse driving regime, the emission spectrum has a characteristic volcano lineshape with a narrow central transparency region surrounded by asymmetric peaks. Next, we couple the spin to a nonlinear cavity that both drives and measures it. In a sufficiently slow longitudinal field, the emission spectrum exhibits anomalous behavior, where the resonances in both the right and left sidebands lie on the same side of the central resonance. The theoretical results are compared to the experimental measurement of the emission of substitutional nitrogen P1 and nitrogen-vacancy NV$^-$ defects in diamond.
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