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American Physical Society, Physical Review Letters, 9(108)

DOI: 10.1103/physrevlett.108.093902

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Four-Wave Mixing fromFe3+Spins in Sapphire

Journal article published in 2012 by Daniel L. Creedon ORCID, Karim Benmessaï, Warwick P. Bowen, Michael E. Tobar
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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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. ; Comment: 5 pages, 5 figures