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Superconducting nano-mechanical diamond resonators

: Bautze, T.; Mandal, S.; Williams, O.A.; Rodière, P.; Meunier, T.; Bäuerle, C.


Carbon 72 (2014), S.100-105
ISSN: 0008-6223
Fraunhofer IAF ()

In this work we present the fabrication and characterization of superconducting nano-mechanical resonators made from nanocrystalline boron doped diamond (BDD). The oscillators can be driven and read out in their superconducting state and show quality factors as high as 40,000 at a resonance frequency of around 10 MHz. Mechanical damping is studied for magnetic fields up to 3 T where the resonators still show superconducting properties. Due to their simple fabrication procedure, the devices can easily be coupled to other superconducting circuits and their performance is comparable with state-of-the-art technology.