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arXiv · 1201.3421

Four Wave Mixing from Fe3+ Spins in Sapphire

Daniel L. Creedon·Karim Benmessai·Warwick P. Bowen·Michael E. Tobar
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Abstract

Fe3+ ions in sapphire exhibit an Electron Spin Resonance (ESR) which interacts strongly with high-Q Whispering Gallery (WG) modes at microwave frequencies. We report the first observation of a third-order paramagnetic nonlinear susceptibility in such a resonator at cryogenic temperatures, and the first demonstration of four wave mixing (FWM) using this parametric nonlinearity. This observation of an all-microwave nonlinearity is an enabling step towards a host of quantum measurement and control applications which utilize spins in solids.

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Daniel L. Creedon, Karim Benmessai, Warwick P. Bowen, Michael E. Tobar. 2012-01-17. Four Wave Mixing from Fe3+ Spins in Sapphire. https://doi.org/10.1103/physrevlett.108.093902

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