Parametric coupling between a nanomechanical resonator and a superconducting microwave cavity
Key Laboratory of Artificial Structures and Quantum Control (MOE), Department of Physics,
Shanghai Jiao Tong University - 800 Dong Chuan Road, Shanghai 200240, China
Accepted: 19 August 2010
We theoretically study a driven nanomechanical resonator capacitively coupled to a superconducting microwave cavity and present a feasible way to measure the coupling strength between them in terms of the coupling-induced normal-mode splitting. The probe spectrum exhibits two sharp sideband peaks exactly located at the resonance frequency of the nanomechanical resonator, which provides us an exact way to determine the resonance frequency of the nanomechanical resonator. Our results may have a variety of potential applications such as quantum transducer and quantum information processing.
PACS: 85.85.+j – Micro- and nano-electromechanical systems (MEMS/NEMS) and devices / 85.25.-j – Superconducting devices
© EPLA, 2010