Superconducting nano-mechanical diamond resonators
  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. 
Tobias Bautze, Soumen Mandal, Oliver A. Williams, Pierre Rodiere,   Tristan Meunier, and Christopher Bauerle
cond-mat.mes-hall cond-mat.mtrl-sci cond-mat.supr-con