Superconducting nano-mechanical diamond resonators

Tobias Bautze (1) , Soumen Mandal (1) , Oliver A. Williams , Pierre Rodiere (2) , Tristan Meunier (1) , Christopher Bäuerle (1)

1 NEEL - QuantECA - Circuits électroniques quantiques Alpes
2 NEEL - MagSup - Magnétisme et Supraconductivité

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.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Supraconductivité [cond-mat.supr-con]

Tobias Bautze, Soumen Mandal, Oliver A. Williams, Pierre Rodiere, Tristan Meunier, et al.. Superconducting nano-mechanical diamond resonators. Carbon, 2014, 72, pp.100. ⟨10.1016/j.carbon.2014.01.060⟩. ⟨hal-00993932⟩