Four-wave mixing from Fe3+ spins in sapphire |
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| Authors: | Creedon Daniel L Benmessaï Karim Bowen Warwick P Tobar Michael E |
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| Institution: | ARC Centre of Excellence for Engineered Quantum Systems, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia. creedon@physics.uwa.edu.au |
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| Abstract: | Fe(3+) ions in sapphire exhibit an electron spin resonance which interacts strongly with high-Q whispering gallery 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 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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