Publikation: High Cooperativity in Coupled Microwave Resonator Ferrimagnetic Insulator Hybrids
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We report the observation of strong coupling between the exchange-coupled spins in a gallium-doped yttrium iron garnet and a superconducting coplanar microwave resonator made from Nb. The measured coupling rate of 450 MHz is proportional to the square root of the number of exchange-coupled spins and well exceeds the loss rate of 50 MHz of the spin system. This demonstrates that exchange-coupled systems are suitable for cavity quantum electrodynamics experiments, while allowing high integration densities due to their spin densities of the order of one Bohr magneton per atom. Our results furthermore show, that experiments with multiple exchange-coupled spin systems interacting via a single resonator are within reach.
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HUEBL, Hans, Christoph W. ZOLLITSCH, Johannes LOTZE, Fredrik HOCKE, Moritz GREIFENSTEIN, Achim MARX, Rudolf GROSS, Sebastian T. B. GOENNENWEIN, 2013. High Cooperativity in Coupled Microwave Resonator Ferrimagnetic Insulator Hybrids. In: Physical Review Letters. American Physical Society (APS). 2013, 111(12), 127003. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.111.127003BibTex
@article{Huebl2013-09-20Coope-52418, year={2013}, doi={10.1103/PhysRevLett.111.127003}, title={High Cooperativity in Coupled Microwave Resonator Ferrimagnetic Insulator Hybrids}, number={12}, volume={111}, issn={0031-9007}, journal={Physical Review Letters}, author={Huebl, Hans and Zollitsch, Christoph W. and Lotze, Johannes and Hocke, Fredrik and Greifenstein, Moritz and Marx, Achim and Gross, Rudolf and Goennenwein, Sebastian T. B.}, note={Article Number: 127003} }
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