Mechanical characterization of a membrane with an on-chip loss shield in a cryogenic environment
Abstract
The quantum transduction of an rf/microwave signal to the optical domain, and vice versa, paves the way for technologies that exploit the advantages of each domain to perform quantum operations. Since electro–optomechanical devices implement a simultaneous coupling of a mechanical oscillator to both an rf/microwave field and an optical field, they are suitable for the realization of a quantum transducer. The membrane-in-the-middle setup is a possible solution, once its vibrational mode is cooled down to ultra cryogenic temperature for achieving quantum operation. This work is focused on the mechanical characterization via an optical interferometric probe, down to T=18 mK, of a loss-shielded metalized membrane designed for this purpose. A stroboscopic technique has been exploited for revealing a mechanical quality factor up to 64×106 at the lowest temperature. In fact, with continuous illumination and a cryostat temperature below 1 K, the heat due to optical absorption is not efficiently dissipated anymore, and the membrane remains hotter than its environment.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (12)
Francesco Marzioni
Physics Division, School of Science and Technology, University of Camerino 1 , I-62032 Camerino, MC,
Riccardo Natali
Physics Division, School of Science and Technology, University of Camerino 1 , I-62032 Camerino, MC,
Michele Bonaldi
Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division 4 , 38123 Povo, TN,
Antonio Borrielli
Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division 4 , 38123 Povo, TN,
Enrico Serra
Istituto Nazionale di Fisica Nucleare, TIFPA 5 , 38123 Povo, TN,
Bruno Morana
Microelectronics Department, EEMCS Faculty, Delft University of Technology 6 , 2628 CD Delft,
Francesco Marin
CNR-INO 7 , L.go Enrico Fermi 6, I-50125 Firenze, FI,
Francesco Marino
CNR-INO 7 , L.go Enrico Fermi 6, I-50125 Firenze, FI,
Nicola Malossi
Physics Division, School of Science and Technology, University of Camerino 1 , I-62032 Camerino, MC,
David Vitali
Physics Division, School of Science and Technology, University of Camerino 1 , I-62032 Camerino, MC,
Giovanni Di Giuseppe
Physics Division, School of Science and Technology, University of Camerino 1 , I-62032 Camerino, MC,
Paolo Piergentili
Physics Division, School of Science and Technology, University of Camerino 1 , I-62032 Camerino, MC,