Josephson junctions can be arranged in a metamaterial configuration, forming an artificial one-dimensional medium for microwave propagation, which enables fast tuning of the speed of light by an external magnetic field. This metamaterial has been used for parametric amplification and as a demonstrator of the dynamical Casimir effect. An important property of metamaterial-based devices is damping, which is fundamentally limited by mechanisms related to the Josephson junctions themselves. In this paper we derive theoretical models for two such mechanisms, the quasiparticle tunneling and the dielectric loss within the material of the tunnel barrier. We discuss whether the junction-based effects are likely to be the limiting factors in the experimentally observed quality factors of metamaterial-based resonators.
|Title of host publication||Proceedings|
|Subtitle of host publication||Progress in Electromagnetics Research Symposium, PIERS 2013|
|Publication status||Published - 2013|
|MoE publication type||Not Eligible|
|Event||34th Progress in Electromagnetics Research Symposium, PIERS 2013 - Stockholm, Sweden|
Duration: 12 Aug 2013 → 15 Aug 2013
Conference number: 34
|Conference||34th Progress in Electromagnetics Research Symposium, PIERS 2013|
|Abbreviated title||PIERS 2013|
|Period||12/08/13 → 15/08/13|
Hassel, J., Lähteenmäki, P., Timofeev, A., Paraoanu, G. S., & Hakonen, P. J. (2013). Characterization of dissipation due to quasiparticles and dielectric loss in a Josephson metamaterial. In Proceedings: Progress in Electromagnetics Research Symposium, PIERS 2013 (pp. 484-488). Electromagnetics Academy.